Let's Catch is a good, quirky game. This one is not.
When I first heard about Sweet Memories - Blackjack, I might have laughed out loud. The game, as far as I could tell, was like Let’s Catch, a surprisingly excellent 2009 WiiWare title. In both, you perform a mundane, repetitive task as a ridiculous and amusing story goes on around you. Appropriately, the setup for this game is that you’re a new student catching up with an old friend over games of blackjack.
Sweet Memories – Blackjack is nothing more than a blackjack game. In order to progress the story in any meaningful way (and unlock new characters to play against), you need to play potentially a thousand rounds of blackjack. Granted, blackjack isn’t a long game, but 1,000 rounds probably equates to somewhere around 15-20 hours of play.

There are two different modes of play, with Normal mode offering the story progressions, and Score mode being more of a high score mode separate from the main game. The game is also notable for being played book-style, while not having any 3D effect. There is an achievement system that encourages some amount of play, but the rewards are just pretty pictures of the anime-style high school girls.
If you have any urge to spend money on a crappy game of blackjack where you, for some reason, play it inside a teenage girl’s bedroom, then you’re sort of weird and might want to look into this game. Even outside of that somewhat weird setup, Sweet Memories - Blackjack is just a poorly designed game that offers little reward for the massive amounts of time required to unlock anything.