AI Factory
AI Factory Limited is a developer on Google Play. They make a variety of simple free Android games. That includes Chess, Checkers, Gin Rummy, Hearts, Euchre, Go, Reversi, Sudoku, and many others. Each one is free with no in-app purchases. Some of them have paid versions that remove advertising. However, the ads really aren’t that bad. A few of them, especially the Chess game, are actually fairly in-depth. You can’t go wrong when it comes to simple, free Android games.