I just today put out my latest game: Chipper. Chipper is 4 person trick-taking card game that is largely played in the region I grew up around west-central Wisconsin. If you are not from there this game probably isn't that interesting, but give it a try anyways.
I've wanted to make a game for this for a long time, with many aborted efforts over the years. I finally buckled down and got it done for Android. The AI was the funnest part to write for it simply because getting it to bid and play correctly required going over how I play myself.
I wanted to get a version out now so that I have something out there. Future versions will hopefully add more features included saving and resuming games in progress as well as more variety in the ability of the AI to play the game.