| Name |
System |
Subsystem |
Players |
Genre |
Release Date |
| Oaken | Switch | Download Software | 1 | RPG | Jul 20, 2023 |
| Obakeidoro! | Switch | Download Software | 1 - 4 | Action | Aug 1, 2019 |
| Obakeidoro! | Switch | Download Software | 1 - 4 | Party/Parlor | Aug 29, 2019 |
| Obey Me | Switch | Download Software | 1 | Action | TBA |
| Observer | Switch | Download Software | 1 | Adventure | Feb 7, 2019 |
| Occultism Interrogation: The Ritual of Little Nightmares | Switch | Download Software | 1 | Puzzle | Nov 1, 2021 |
| Ocean Animals Puzzle | Switch | Download Software | 1 | Puzzle | Jun 2, 2022 |
| Ocean Driving: Boat Parking Simulator | Switch | Download Software | 1 | Action | Jan 23, 2025 |
| Oceanhorn 2: Knights of the Lost Realm | Switch | Download Software | 1 | Adventure | Oct 28, 2020 |
| Oceanhorn: Monster of Uncharted Seas | Switch | Download Software | 1 | Adventure | Jun 22, 2017 |
| Ocean's Heart | Switch | Download Software | 1 | RPG | Feb 10, 2022 |
| OctaFight | Switch | Download Software | 1 - 8 | Party/Parlor | Dec 10, 2020 |
| Octahedron: Transfixed Edition | Switch | Download Software | 1 | Rhythm | Jan 17, 2019 |
| Octocopter: Double or Squids | Switch | Download Software | 1 - 4 | Racing | Apr 5, 2018 |
| Octo Curse | Switch | Download Software | 1 | Action | May 25, 2023 |
| Octodad: Dadliest Catch | Switch | Download Software | 1 - 4 | Adventure | Nov 9, 2017 |
| Octogeddon | Switch | Download Software | 1 | Action | May 16, 2019 |
| Octopath Traveler | Switch | | 1 | RPG | Jul 13, 2018 |
| Octopath Traveler II | Switch | | 1 | RPG | Feb 24, 2023 |
| Odallus: The Dark Call | Switch | Download Software | 1 | Action | Feb 8, 2019 |
| Oddballers | Switch | Download Software | 1 - 6 | Sports | Jan 26, 2023 |
| Odd Dog and Even Cat | Switch | Download Software | 1 | Action | Mar 17, 2022 |
| Odd Hue Out | Switch | Download Software | 1 | Puzzle | Apr 18, 2024 |
| Oddmar | Switch | Download Software | 1 | Action | Feb 20, 2020 |
| Odd Shape Out | Switch | Download Software | 1 | Puzzle | Mar 20, 2025 |
| Oddworld: Munch's Oddysee | Switch | Download Software | 1 | Adventure | May 14, 2020 |
| Oddworld: New ‘n’ Tasty | Switch | | 1 | Action | Oct 27, 2020 |
| Oddworld: Soulstorm | Switch | | 1 | Action | Nov 18, 2022 |
| Oddworld: Stranger's Wrath | Switch | Download Software | | | Jan 23, 2020 |
| Odium To The Core | Switch | Download Software | 1 | Rhythm | Dec 25, 2018 |
| Odysseus Kosmos and his Robot Quest | Switch | Download Software | 1 | Adventure | Feb 4, 2021 |
| Off And On Again | Switch | Download Software | 1 - 4 | Adventure | May 29, 2021 |
| Office Lovers | Switch | Download Software | 1 | Adventure | Sep 3, 2020 |
| Office Simulator | Switch | Download Software | 1 | Simulation | Sep 12, 2021 |
| Offroad Driving Simulator4x4: Trucks & SUV Trophy | Switch | Download Software | 1 | Racing | Mar 11, 2021 |
| Offroad Jeep Quest | Switch | Download Software | 1 | Racing | Apr 5, 2024 |
| Offroad Masters: Motocross Racers | Switch | Download Software | 1 | Racing | Jun 28, 2024 |
| Offroad Mini Racing | Switch | Download Software | 1 | Racing | Feb 20, 2021 |
| Offroad Moto Bike | Switch | Download Software | 1 | Racing | Jan 27, 2023 |
| Offroad Night Racing | Switch | Download Software | 1 | Racing | Mar 4, 2022 |
| Offroad Quest Simulator | Switch | Download Software | 1 | Action | Oct 4, 2024 |
| Offroad Racing - Buggy X ATV X Moto | Switch | Download Software | 1 | Racing | Apr 23, 2020 |
| Offroad Truck 4x4 DIrt SImulator | Switch | Download Software | 1 | Racing | Jun 29, 2023 |
| Offroad Truck Simulator | Switch | Download Software | 1 | Simulation | Jul 12, 2024 |
| Off The Rails | Switch | Download Software | 1 | Action | Mar 17, 2023 |
| Off The Road Unleashed | Switch | Download Software | 1 | Racing | Aug 26, 2021 |
| Of Mice and Sand Revised | Switch | Download Software | | Action | Jan 11, 2018 |
| Of Tanks and Demons III | Switch | Download Software | 1 | Shooter | Aug 14, 2020 |
| Of The Red, The Light, and the Ayakashi Tsuzuri | Switch | Download Software | 1 | Adventure | Feb 29, 2024 |
| Ogre | Switch | Download Software | 1 | Strategy | May 24, 2022 |
| Ogre Tale | Switch | Download Software | 1 - 3 | Action | Jul 11, 2024 |
| Ogu and the Secret Forest | Switch | Download Software | 1 | Adventure | Apr 29, 2025 |
| Ohayou! Beginner's Japanese | WiiU / Switch | Download Software | 1 | Simulation | TBA |
| Oh! Edo Towns | Switch | Download Software | 1 | Simulation | Aug 8, 2019 |
| Oh My Godheads: Party Edition | Switch | Download Software | 1 - 4 | Fighting | Sep 25, 2018 |
| Oh My God! Yakabami | Switch | Download Software | 1 | Action | Dec 23, 2021 |
| Oh... Sir! The Hollywood Roast | Switch | Download Software | 1 - 2 | Simulation | Jan 18, 2018 |
| Oh... Sir! The Insult Simulator | Switch | Download Software | 1 - 2 | Simulation | Jan 18, 2018 |
| Oirbo | Switch | Download Software | 1 | Action | Jun 26, 2025 |
| Oita Beppu Mystery Guide Distorted Bamboo Lantern | Switch | Download Software | 1 | Adventure | Jul 7, 2022 |
| Okami HD | Switch | Download Software | 1 | Adventure | Aug 9, 2018 |
| Okayu Nyumu | Switch | Download Software | 1 | Adventure | Feb 27, 2025 |
| Okinawa Rush | Switch | Download Software | 1 - 2 | Action | Oct 28, 2021 |
| OK K.O.! Let's Play Heroes | Switch | Download Software | 1 | Action | Oct 30, 2018 |
| Okudake Study | Switch | Download Software | 1 | Puzzle | Feb 22, 2024 |
| OkunoKA | Switch | Download Software | 1 | Action | Nov 30, 2018 |
| OkunoKA Madness | Switch | Download Software | 1 | Action | Sep 8, 2020 |
| Okuri Inu | Switch | Download Software | 1 | Adventure | Jul 12, 2018 |
| Old Coin Pusher Friends | Switch | Download Software | 1 | Party/Parlor | Mar 3, 2022 |
| Old Coin Pusher Friends 2 | Switch | Download Software | 1 | Shooter | Mar 28, 2024 |
| Old Coins Pusher Friends 3 | Switch | Download Software | 1 | Simulation | Dec 26, 2024 |
| Old Man's Journey | Switch | Download Software | 1 | Puzzle | Feb 20, 2018 |
| Old School | Switch | Download Software | 1 | Action | Sep 9, 2023 |
| Old School Musical | Switch | Download Software | 1 - 2 | Rhythm | Sep 13, 2018 |
| Old School Racer 2 | Switch | Download Software | 1 | Racing | Jan 18, 2019 |
| Old Skies | Switch | Download Software | 1 | Adventure | May 27, 2025 |
| Old Time Hockey | Switch | Download Software | 1 - 2 | Sports | Cancelled |
| Olija | Switch | Download Software | 1 | Action | Jan 28, 2021 |
| Oliver's Adventures in the Fairyland | Switch | Download Software | 1 | Action | Sep 23, 2019 |
| OlliOlli: Switch Stance | Switch | Download Software | 1 - 4 | Sports | Feb 14, 2019 |
| OlliOlli World | Switch | | | Action | Feb 8, 2022 |
| OLLLO | Switch | Download Software | 1 | Puzzle | Feb 29, 2024 |
| Olympia Soirée | Switch | Download Software | 1 | Adventure | Sep 9, 2021 |
| Olympic Basketball | Switch | Download Software | 1 - 2 | Sports | May 7, 2021 |
| Olympic Boxing | Switch | Download Software | 1 - 2 | Sports | Mar 20, 2021 |
| Olympic Games Tokyo 2020 - The Official Video Game | Switch | | 1 - 4 | Sports | Jun 22, 2021 |
| Olympic Table Tennis | Switch | Download Software | 1 | Sports | Jan 18, 2021 |
| Omega 6: The Triangle Stars | Switch | Download Software | 1 | Adventure | Feb 28, 2025 |
| Omega-6: The Triangle Stars | Switch | Download Software | 1 - 2 | Action | Jul 25, 2024 |
| OmegaBot | Switch | Download Software | 1 | Action | Jan 20, 2023 |
| Omega Fighter | Switch | ARC | 1 - 2 | Shooter | Jul 26, 2018 |
| Omega Labyrinth Life | Switch | Download Software | 1 | RPG | Aug 1, 2019 |
| Omega Strike | Switch | Download Software | 1 | Action | Dec 24, 2018 |
| Omega Strikers | Switch | Download Software | 1 | Fighting | Apr 27, 2023 |
| Omega Vampire | Switch | | 1 | Adventure | Aug 29, 2019 |
| Omen Exitio: Plague | Switch | Download Software | 1 | RPG | Aug 29, 2019 |
| Omen of Sorrow | Switch | Download Software | 1 - 2 | Fighting | Mar 23, 2023 |
| Omensight: Definitive Edition | Switch | Download Software | 1 | Action | Dec 13, 2018 |
| OMG Police - Car Chase TV Simulator | Switch | Download Software | 1 | Racing | Apr 20, 2020 |
| OMG Zombies! | Switch | Download Software | 1 | Action | Mar 26, 2019 |
| Ominous Tales: The Forsaken Isle | Switch | Download Software | 1 | Adventure | Jan 4, 2024 |
| Omnimus | Switch | Download Software | 1 | Adventure | Jul 20, 2023 |
| Omno | Switch | Download Software | 1 | Action | Dec 16, 2021 |
| Om Nom: Coloring, Toons & Puzzle | Switch | Download Software | 1 - 2 | Puzzle | Mar 11, 2022 |
| Om Nom Run | Switch | Download Software | 1 - 8 | Party/Parlor | Nov 5, 2021 |
| Om Nom Run 2 | Switch | Download Software | 1 | Action | Nov 29, 2024 |
| Omochapon | Switch | Download Software | 1 | Adventure | Aug 8, 2024 |
| Omori | Switch | Download Software | 1 | RPG | Jun 17, 2022 |
| OmoTomO | Switch | Download Software | 1 - 2 | Puzzle | Jan 23, 2020 |
| Omvorm | Switch | Download Software | 1 - 2 | Puzzle | Sep 18, 2018 |
| On Air! | Switch | | 1 | Adventure | Jul 25, 2024 |
| Once Again | Switch | Download Software | 1 | Adventure | Jan 8, 2025 |
| Once Upon A Jester | Switch | Download Software | 1 | Adventure | Nov 9, 2022 |
| Once Upon A Jester | Switch | Download Software | 1 - 2 | Adventure | Year 2022 |
| Once Upon A Puppet | Switch | Download Software | 1 | Adventure | Jun 25, 2025 |
| Once Upon A Time On Halloween | Switch | Download Software | 1 | Shooter | Oct 20, 2022 |
| Onde | Switch | Download Software | 1 | Rhythm | Year 2022 |
| ONE | Switch | Download Software | 1 | Adventure | Dec 22, 2023 |
| ONE BTN BOSSES | Switch | Download Software | 1 | Action | Mar 13, 2025 |
| One Card, One Shot: Mafia | Switch | Download Software | 1 | RPG | Q4 2024 |
| One Deck Dungeon | Switch | Download Software | 1 | RPG | Aug 12, 2021 |
| One Dog Story | Switch | Download Software | 1 | RPG | Jul 17, 2020 |
| One Escape | Switch | Download Software | 1 | Puzzle | Mar 26, 2021 |
| One Eyed Kutkh | Switch | Download Software | 1 | Adventure | Mar 9, 2018 |
| One-Eyed Lee and the Dinner Party | Switch | Download Software | 1 | Adventure | Aug 27, 2021 |
| One Finger Death Punch 2 | Switch | Download Software | 1 - 2 | Fighting | Feb 26, 2020 |
| One Gun Guy | Switch | Download Software | 1 | Action | Feb 25, 2022 |
| One Hand Clapping | Switch | Download Software | 1 | Action | Dec 14, 2021 |
| One Hell of a Ride | Switch | Download Software | 1 | Racing | Sep 30, 2022 |
| Oneiros | Switch | Download Software | 1 | Adventure | Nov 6, 2020 |
| One Last Breath | Switch | Download Software | 1 | Puzzle | Mar 28, 2024 |
| One Last Memory | Switch | Download Software | 1 | Adventure | Nov 4, 2021 |
| One Last Memory - Reimagined | Switch | Download Software | 1 | Shooter | Jun 9, 2022 |
| One Line Coloring | Switch | Download Software | 1 | Puzzle | Aug 21, 2020 |
| One Lonely Outpost | Switch | Download Software | 1 | Simulation | Mar 6, 2025 |
| One More Dungeon | Switch | Download Software | | | Dec 14, 2017 |
| One More Dungeon 2 | Switch | Download Software | 1 | Shooter | Mar 1, 2024 |
| One More Gate | Switch | Download Software | 1 | RPG | May 21, 2024 |
| One More Island | Switch | Download Software | 1 | Simulation | Oct 20, 2022 |
| One Night: Burlesque | Switch | Download Software | 1 | Adventure | Nov 3, 2023 |
| One Night Stand | Switch | Download Software | 1 | Adventure | Oct 4, 2019 |
| One Person Story | Switch | Download Software | 1 | Action | Nov 8, 2019 |
| One Piece Odyssey | Switch | | 1 | RPG | Jul 26, 2024 |
| One Piece Pirate Warriors 3 Deluxe Edition | Switch | | | Action | May 10, 2018 |
| One Piece Pirate Warriors 4 | Switch | | 1 - 4 | Action | Mar 27, 2020 |
| ONE PIECE: Unlimited World Red Deluxe Edition | Switch | | | Action | Sep 29, 2017 |
| OnePunch | Switch | Download Software | 1 | Action | Oct 24, 2024 |
| OneShot: World Machine Edition | Switch | Download Software | 1 | Adventure | Sep 22, 2022 |
| One Step After Fall | Switch | Download Software | 1 | Adventure | Apr 3, 2025 |
| One Step From Eden | Switch | Download Software | 1 - 2 | RPG | Mar 26, 2020 |
| One Strike | Switch | Download Software | 1 - 2 | Fighting | Jun 7, 2018 |
| One True Hero | Switch | Download Software | 1 | Action | Oct 20, 2022 |
| One Way Heroics Plus | Switch | Download Software | 1 | RPG | Jun 18, 2020 |
| One Way: The Elevator | Switch | Download Software | 1 | Adventure | Mar 31, 2022 |
| One-Way Ticket | Switch | Download Software | 1 | Adventure | Nov 28, 2019 |
| Onigiri | Switch | Download Software | | RPG | Jan 30, 2019 |
| Onigo Hunter | Switch | Download Software | 1 | RPG | May 25, 2023 |
| Oniken | Switch | Download Software | 1 | Action | Feb 8, 2019 |
| Oniko Kororin Game | Switch | Download Software | 1 | Puzzle | May 9, 2024 |
| Onima - Sweet Me, Brother | Switch | Download Software | 1 | Adventure | Jul 22, 2021 |
| Onimusha 2: Samurai's Destiny | Switch | | 1 | Action | May 23, 2025 |
| Onimusha Warlords | Switch | Download Software | 1 | Action | Jan 15, 2019 |
| Oninaki | Switch | | 1 | | Aug 22, 2019 |
| Onion Assault | Switch | Download Software | 1 | Action | Jan 26, 2023 |
| Onion Force | Switch | Download Software | 1 | Action | Jan 25, 2024 |
| Oniria Crimes | Switch | Download Software | 1 | Puzzle | Dec 3, 2020 |
| Onirike | Switch | Download Software | 1 | Adventure | Jun 29, 2021 |
| Oni: Road To Be The Mightiest Oni | Switch | Download Software | 1 | Action | Mar 9, 2023 |
| Only Sky Parkour: Island Up | Switch | Download Software | 1 | Action | Jun 12, 2025 |
| Only Up! | Switch | Download Software | 1 | Simulation | Apr 18, 2025 |
| OnlyUp! | Switch | Download Software | 1 | Action | Nov 10, 2023 |
| Only Up! Cars | Switch | Download Software | 1 | Racing | May 18, 2025 |
| Only Up! Remaster | Switch | Download Software | 1 | Action | Jun 6, 2025 |
| Only Way Up | Switch | Download Software | 1 | Simulation | Oct 14, 2023 |
| On Rusty Trails | Switch | Download Software | 1 | Action | Nov 16, 2023 |
| Onsen Master | Switch | Download Software | 1 - 4 | Action | Sep 1, 2022 |
| On The Run: Find The Escaped Criminal | Switch | Download Software | 1 | Puzzle | Mar 16, 2023 |
| On Your Tail | Switch | Download Software | 1 | Adventure | Mar 13, 2025 |
| O---O | Switch | Download Software | 1 | Action | May 27, 2021 |
| Ooblets | Switch | Download Software | 1 | Simulation | Sep 1, 2022 |
| oOo: Ascension | Switch | Download Software | 1 - 2 | Racing | Oct 4, 2018 |
| Ooops! 2 | Switch | Download Software | 1 | Action | Aug 31, 2021 |
| Oops, I Said Yes?! | Switch | Download Software | 1 | Adventure | Jan 25, 2024 |
| Open Roads | Switch | Download Software | 1 | Adventure | Feb 22, 2024 |
| Operate Now: Hospital | Switch | Download Software | 1 | Simulation | Jul 27, 2023 |
| Operation Hardcore | Switch | Download Software | 1 - 2 | Action | Jun 8, 2018 |
| Operation Hostage Rescue | Switch | Download Software | 1 | Action | May 2, 2025 |
| Operation Pig | Switch | Download Software | 1 | Action | Nov 7, 2018 |
| Operation: Polygon Storm | Switch | Download Software | 1 | Action | Aug 23, 2024 |
| Operation Scorpion: Take Down | Switch | Download Software | 1 | Shooter | May 30, 2024 |
| Operation Steel | Switch | Download Software | 1 | Action | Jun 20, 2024 |
| Operation: Tango | Switch | Download Software | 1 | Adventure | Aug 1, 2024 |
| Operation Wolf Returns: First Mission | Switch | Download Software | 1 - 2 | Shooter | Sep 21, 2023 |
| Operation Zeta | Switch | Download Software | 1 | Puzzle | Mar 4, 2022 |
| Operencia: The Stolen Sun | Switch | Download Software | 1 | RPG | Mar 31, 2020 |
| Operius DX | Switch | Download Software | 1 - 4 | Shooter | Jun 2, 2025 |
| Opus Castle | Switch | Download Software | 1 | Adventure | Oct 27, 2022 |
| OPUS: Echo of Starsong - Full Bloom Edition | Switch | Download Software | 1 | RPG | May 11, 2022 |
| Opus: Rocket of Whispers | Switch | Download Software | 1 | Adventure | Mar 22, 2018 |
| Opus: The Day We Found Earth | Switch | Download Software | 1 | Adventure | Nov 30, 2017 |
| Orangeblood | Switch | Download Software | 1 | RPG | Oct 1, 2020 |
| Orange Season | Switch | Download Software | 1 | RPG | Oct 24, 2024 |
| Orbals | Switch | Download Software | 1 | Puzzle | Aug 4, 2021 |
| Orbibot | Switch | Download Software | 1 | Puzzle | Aug 26, 2021 |
| Orbital Bullet | Switch | Download Software | 1 | Shooter | Nov 10, 2022 |
| Orbital Cargo Division | Switch | Download Software | 1 | Adventure | Nov 20, 2023 |
| Orbitblazers | Switch | Download Software | 1 - 2 | Racing | Jan 31, 2020 |
| orbit.industries | Switch | Download Software | 1 | Simulation | Apr 21, 2022 |
| Orbt XL | Switch | Download Software | 1 | Action | Sep 23, 2020 |
| OrbWars | Switch | Download Software | 1 - 4 | Action | May 25, 2024 |
| Orcen Axe | Switch | Download Software | 1 | RPG | Nov 8, 2022 |
| Ord | Switch | Download Software | 1 | Adventure | Nov 6, 2020 |
| Order Land | Switch | Download Software | 1 | Action | Sep 28, 2017 |
| Ordyne | Switch | ARC | 1 - 2 | Shooter | Oct 27, 2022 |
| Orebody: Binder's Take | Switch | Download Software | 1 | Action | Mar 30, 2023 |
| Organic Engine | Switch | Download Software | 1 | Puzzle | Aug 18, 2022 |
| Organ Trail Complete Edition | Switch | Download Software | 1 - 2 | Strategy | Aug 10, 2023 |
| Ori and the Blind Forest | Switch | Download Software | 1 | Adventure | Sep 27, 2019 |
| Ori and the Will of the Wisps | Switch | | | Action | Sep 17, 2020 |
| Original Journey | Switch | Download Software | 1 | Action | TBA |
| Orion Haste | Switch | Download Software | 1 | Action | Mar 15, 2024 |
| Orius | Switch | ARC | 1 - 2 | Action | Dec 23, 2021 |
| Orn: The Tiny Forest Sprite | Switch | Download Software | 1 | Action | Jan 24, 2020 |
| Orphans | Switch | Download Software | 1 | Adventure | Apr 18, 2025 |
| Orten Was The Case | Switch | Download Software | 1 | Adventure | Nov 29, 2023 |
| Ortheo | Switch | Download Software | 1 | Action | Nov 30, 2023 |
| OshiRabu: Waifus Over Husbandos + Love-Or-Die | Switch | | 1 | Adventure | Apr 28, 2022 |
| Oshiritantei Pupupu Mirai no Meiten Teitojo | Switch | | 1 | Adventure | Nov 4, 2021 |
| Oshiro | Switch | Download Software | 1 | Action | Feb 2, 2023 |
| Osman Gazi | Switch | Download Software | 1 | RPG | Jan 23, 2025 |
| OS Omega | Switch | Download Software | 1 | RPG | Jul 29, 2021 |
| Osyaberi! Horjiyo! Gekihori: Anna Holinski Saves The Universe, Alright? | Switch | Download Software | 1 | Action | Sep 21, 2023 |
| Osyaberi！Kakejyo！～Ubawareta Dot Coin o oe！～ | Switch | Download Software | 1 | Action | Sep 13, 2018 |
| Osyaberi! Puzzle Chigatan ~Spot the Differences with Everyone~ | Switch | Download Software | 1 | Action | Mar 18, 2021 |
| Othello | Switch | Download Software | 1 - 2 | Party/Parlor | Mar 23, 2017 |
| Othello (1984) | Switch | ARC | 1 - 2 | Party/Parlor | Feb 20, 2025 |
| Othercide | Switch | Download Software | 1 | Strategy | Sep 10, 2020 |
| Otherwar | Switch | Download Software | 1 | Action | Aug 2, 2024 |
| Otherworldly | Switch | Download Software | 1 | Adventure | Feb 21, 2020 |
| Otoko Cross: Pretty Boy Breakup | Switch | Download Software | 1 | Shooter | Jul 21, 2023 |
| Otoko Cross: Pretty Boys Dropout | Switch | Download Software | 1 | Puzzle | Sep 1, 2023 |
| Otoko Cross: Pretty Boys Klondike Solitaire | Switch | Download Software | 1 | Party/Parlor | Dec 26, 2022 |
| Otoko Cross: Pretty Boys Mahjong Solitaire | Switch | Download Software | 1 | Puzzle | Sep 22, 2022 |
| Otokomizu | Switch | Download Software | 1 | Action | Oct 31, 2019 |
| Otti: The House Keeper | Switch | Download Software | 1 | Action | Jan 20, 2021 |
| Otto | Switch | Download Software | 1 | Puzzle | Jun 8, 2018 |
| OTTTD: Over The Top Tower Defense | Switch | Download Software | 1 | Strategy | May 6, 2019 |
| OTXO | Switch | Download Software | 1 | Shooter | Mar 28, 2024 |
| OU | Switch | Download Software | 1 | Action | Aug 31, 2023 |
| Ouchi de Rilakkuma: Rilakkuma ga Ouchi ni Yattekita | Switch | | 1 | Simulation | Nov 5, 2020 |
| Ouija: They Are Among Us | Switch | Download Software | 1 | Action | Sep 14, 2023 |
| Our After-School Playground | Switch | Download Software | 1 - 4 | Party/Parlor | Feb 10, 2022 |
| Our Battle Has Just Begun Episode 1 | Switch | Download Software | 1 | Adventure | Jul 15, 2021 |
| Our Battle Has Just Begun! Episode 2 | Switch | Download Software | 1 | Adventure | Mar 3, 2022 |
| Our Exciting Summer Camp | Switch | Download Software | 1 - 4 | Action | May 15, 2025 |
| Our Fantasy Quest | Switch | Download Software | 1 - 4 | Party/Parlor | Oct 13, 2022 |
| Our Field Trip Adventure | Switch | Download Software | 1 - 4 | Action | Apr 25, 2024 |
| Our Flick Erasers | Switch | Download Software | 1 - 4 | Puzzle | Aug 2, 2019 |
| Our Flick Erasers 3 | Switch | Download Software | 1 - 6 | Puzzle | Apr 27, 2023 |
| Our Flick Erasers 3 Online | Switch | Download Software | 1 | Action | Dec 7, 2023 |
| Our Flick Erasers - New Semester | Switch | Download Software | 1 - 6 | Action | Aug 26, 2021 |
| Our Ninja World | Switch | Download Software | 1 - 4 | Action | Apr 28, 2022 |
| Our Summer Festival | Switch | Download Software | 1 - 4 | Party/Parlor | Nov 25, 2021 |
| Our Summer Sports | Switch | Download Software | 1 - 4 | Party/Parlor | Jul 7, 2022 |
| Our Two Bedroom Story | Switch | Download Software | 1 | Adventure | May 7, 2020 |
| Our Winter Sports | Switch | Download Software | 1 - 4 | Party/Parlor | Feb 3, 2022 |
| Our World Is Ended | Switch | | 1 | Adventure | Apr 18, 2019 |
| Outbreak | Switch | Download Software | 1 - 2 | RPG | Nov 19, 2020 |
| Outbreak: Contagious Memories | Switch | Download Software | 1 | Action | Apr 6, 2022 |
| Outbreak: Endless Nightmares | Switch | Download Software | 1 - 2 | RPG | May 19, 2021 |
| Outbreak: Epidemic | Switch | Download Software | 1 - 2 | Adventure | Oct 22, 2020 |
| Outbreak Lost Hope | Switch | Download Software | 1 | RPG | Dec 17, 2020 |
| Outbreak: The Fedora Files - What Lydia Knows | Switch | Download Software | 1 | RPG | May 3, 2024 |
| Outbreak: The New Nightmare | Switch | Download Software | 1 - 2 | RPG | Dec 3, 2020 |
| Outbreak: The Nightmare Chronicles | Switch | Download Software | 1 | RPG | Nov 5, 2020 |
| Outbuddies DX | Switch | Download Software | 1 | Adventure | TBA |
| Outcasts of Dungeon | Switch | Download Software | 1 | RPG | Mar 3, 2023 |
| Outer Terror | Switch | Download Software | 1 | Adventure | Apr 12, 2024 |
| Outer Wilds | Switch | | 1 | Adventure | Dec 7, 2023 |
| Outlast 2 | Switch | Download Software | 1 | Adventure | Mar 27, 2018 |
| Outlast: Bundle of Terror | Switch | Download Software | 1 | Adventure | Feb 27, 2018 |
| Out of Line | Switch | Download Software | 1 | Action | Aug 18, 2021 |
| Out of Line | Switch | Download Software | 1 | Action | Aug 18, 2021 |
| Out of Moves | Switch | Download Software | 1 | Puzzle | Apr 23, 2025 |
| Out of Sight | Switch | Download Software | 1 | Adventure | Jun 12, 2025 |
| Out of Space | Switch | Download Software | 1 - 4 | Party/Parlor | Nov 25, 2020 |
| Out of the Box | Switch | Download Software | 1 | Strategy | Aug 22, 2018 |
| Outpost Delta | Switch | Download Software | 1 | Action | Oct 20, 2020 |
| Out Racing: Arcade Memory | Switch | Download Software | 1 | Racing | Mar 28, 2024 |
| Out There: Ω The Alliance | Switch | Download Software | 1 | Strategy | Apr 9, 2019 |
| Outward: Definitive Edition | Switch | | 1 | RPG | Mar 28, 2024 |
| Overboard! | Switch | Download Software | 1 | Adventure | Jun 2, 2021 |
| Overboss | Switch | Download Software | 1 - 5 | Strategy | Aug 15, 2024 |
| Overcooked 2 | Switch | Download Software | 1 - 4 | Action | Aug 7, 2018 |
| Overcooked: All You Can Eat | Switch | | 1 - 4 | Simulation | Mar 23, 2021 |
| Overcooked: Special Edition | Switch | Download Software | 1 - 4 | Action | Jul 27, 2017 |
| Overdelivery | Switch | Download Software | 1 | Simulation | Apr 13, 2024 |
| Overdriven Evolution | Switch | Download Software | 1 - 4 | Shooter | Sep 2, 2022 |
| Overdriven Reloaded: Special Edition | Switch | Download Software | 1 - 4 | Action | Jan 10, 2019 |
| Overdungeon | Switch | Download Software | 1 | RPG | Jan 9, 2025 |
| Overheat: Kitchen Chaos | Switch | Download Software | 1 - 4 | Simulation | Nov 8, 2024 |
| Over Horizon x Steel Empire | Switch | Download Software | 1 | Shooter | Jul 18, 2024 |
| Overland | Switch | Download Software | 1 | Adventure | Sep 19, 2019 |
| Overlanders | Switch | Download Software | 1 | Racing | Nov 14, 2019 |
| Overloop | Switch | Download Software | 1 | Action | Mar 24, 2023 |
| Overlord: Escape from Nazarick | Switch | Download Software | 1 | Action | Jun 16, 2022 |
| Overmorrow | Switch | Download Software | 1 | Adventure | May 17, 2024 |
| Overpass | Switch | | 1 - 8 | Racing | Mar 17, 2020 |
| Over RequiemZ | Switch | Download Software | 1 | Adventure | Apr 17, 2025 |
| Override 2: Super Mech League | Switch | Download Software | 1 - 2 | Action | Dec 22, 2020 |
| Override: Mech City Brawl | Switch | Download Software | 1 - 4 | Action | Oct 15, 2019 |
| Overrogue | Switch | Download Software | 1 | RPG | Jul 7, 2022 |
| OverShoot Battle Race | Switch | Download Software | 1 - 2 | Racing | Feb 16, 2023 |
| Over The Alps | Switch | Download Software | 1 | RPG | Aug 25, 2020 |
| OverTop | Switch | | 1 | Racing | Apr 27, 2017 |
| Overtop (2025) | Switch | Download Software | 1 | Action | Feb 28, 2025 |
| Overwatch 2 | Switch | Download Software | 1 | Shooter | Oct 4, 2022 |
| Overwatch Legendary Edition | Switch | | | Shooter | Oct 15, 2019 |
| Overwhelm | Switch | Download Software | 1 - 2 | Action | Apr 4, 2019 |
| Ovivo | Switch | Download Software | 1 | Action | Jul 3, 2019 |
| O-Void: Console Edition | Switch | Download Software | 1 | Action | May 31, 2024 |
| Owlboy | Switch | Download Software | | Action | Feb 13, 2018 |
| O.W.L. Projekt | Switch | Download Software | 1 | Puzzle | Nov 6, 2024 |
| O.W.L. Projekt 2 | Switch | Download Software | 1 | Puzzle | Mar 5, 2025 |
| Oxenfree | Switch | Download Software | 1 | Adventure | Oct 6, 2017 |
| OXENFREE II: Lost Signals | Switch | | 1 | Adventure | Jul 12, 2023 |
| Oxide Room 104 | Switch | Download Software | 1 | Adventure | Jun 17, 2022 |
| O X Logic Puzzle 1000 | Switch | Download Software | 1 | Puzzle | Oct 24, 2019 |
| Oxyjet | Switch | Download Software | 1 - 4 | Fighting | Dec 13, 2018 |
| Oxytone | Switch | Download Software | 1 | Puzzle | Apr 11, 2024 |
| OZMAFIA -Vivace- | Switch | Download Software | 1 | Adventure | Aug 27, 2020 |
