Nintendo's bringing four games to the Wii U launch. Catch up on what they are.
Nintendo is publishing four games at the Wii U launch, with Nintendo Land and New Super Mario Bros. U being the only two developed internally. In the launch window (ending on March 31, 2013), Nintendo also expects to publish Game & Wario, LEGO City Undercover, Pikmin 3, The Wonderful 101, and Wii Fit U. In the far-off future, Nintendo will publish Bayonetta 2 and a new Super Smash Bros. game for Wii U.
Nintendo Land

Developer: Nintendo
Players: 1-5
Off-TV Play: No
What is it?: Nintendo Land is a series of 12 different Nintendo-themed attractions, with six focused on multiplayer and six focused on single-player. The attractions seem to be a bit more developed than what you'd expect from Wii mini-game collections. The game also features a large overworld that you can explore, littered with unlockable Nintendo items.
GamePad Use: Varies from attraction to attraction. Nintendo Land highlights all sorts of ways you can use the GamePad.
Staff Approval Rating: 92% (2nd)
New Super Mario Bros. U

Developer: Nintendo
Players: 1-5
Off-TV Play: Yes
What is it?: New Super Mario Bros. U is the fourth entry in the New Super Mario Bros. series. It features more similarities to Super Mario World, with heavy Yoshi use and a more open overworld. The game will also use Nintendo's Miiverse so friends can issue each other challenges in game.
GamePad Use: In Boost Mode, a player can use the GamePad to place blocks to help or hinder the other players. Boost Rush mode is a speed run-focused variant of that.
Staff Approval Rating: 94% (1st)
Ninja Gaiden 3: Razor's Edge

Developer: Team Ninja
Players: 1-8 (2 in co-op, 8 in online multiplayer)
Off-TV Play: Not Likely
What is it?: Ninja Gaiden 3: Razor's Edge is a reworked version of the early 2012 360/PS3 release Ninja Gaiden 3. The game features more gore and refined gameplay, including an added playable character and online co-op.
GamePad Use: Used to select weapons or Ninpo and see a list of combos.
Wii U Differences: Ninja Gaiden 3 on other systems was rated Teen, and this one is rated Mature. It also features new character Ayane, dismemberment, and improved enemy AI.
Staff Approval Rating: 40% (11th)
Sing Party

Developer: FreeStyle Games
Players: Unlimited
Off-TV Play: No
What is it?: Sing Party is a karaoke game from the developers of DJ Hero.
GamePad Use: Singers can see the lyrics on the GamePad, with the goal of making performances more engaging in a party setting.
Staff Approval Rating: 6% (20th)