A Tic-tac-toe like game. To score you need to place 4 X's or O's in one line and when you score, the X's or O's in this line disappear. This isn't that easy because of the randomly generated grey fields, where you can't place O or X. You can move X or O by one field in four directions. On every move one X or O appears. An interesting logical game. Have fun!
https://play.google.com/store/apps/details?id=pl.wykop.circle
https://play.google.com/store/apps/details?id=pl.wykop.circle