We talked about Skiller WallBall for Symbian S60v5 at another time
Skiller WallBall is like a social network games , so when installing Wallball can play 11 games more: PerfectHit, 4 in a row, Reversi, Checkers, Backgammon, ShapeIt, Cespedes, Tic Tac Toe, Pingi, Sudoku and Dropps . In some of them we can play against other players around the World.
After the download process, you must register, username and password, and you can play all the games , included Wallball . For this reason, you need a data connection to the internet, so if you have flat rate or wifi, better forget it.