A free program for Android, by Sourcehub.

If you like strategy games, then you should definitely check out Cross and Zero. It’s one of the best logic games for kids and adults. It’s easy to play, but the gameplay gets more and more challenging as you level up.

The goal of Cross and Zero is to challenge your friends and family by building the biggest stack of Xs and Os. You can play with one, two, or three players. The objective is the same in all versions: you need to place the Xs and Os on the board in order to win the game.

If you get tired of playing Cross and Zero against your friends and family, you can also challenge a computer.