Would be a 5 star but the main game I play (9 Mens Morris) has some major bugs. I only play Hard mode (I tried network many times but it never connects) regardless of the difficulty when I undo (which I rarely do but unintended moves happen) after a piece has been taken the piece comes back as black 100% of the time regardless of what color it was before or what color the player is. But the worst one; I've probably beat the AI in Hard (without undo, and I've never used hint) over 100 times in just the past few days because I play matches on the bus, while I'm waiting for something to load, during commercials, et cetera and each match takes just 2-5 minutes or so and it claims to award 30 points per victory and my score on the leaderboard is 150 and every time I check after a victory it doesn't go up (but on a rare occasion it goes up randomly). And it crashes a lot! Particularly when I take a piece. And when they have a mill or two and I try to take their last piece that's not in a mill it crashes every time.
I tried 4-in-a-row (Hard of course) and it doesn't even work at all, the AI never makes a move.