Sorcerers is a free turn-based multi-player fantasy battle game. Once you have downloaded the app, you can play as many games as you want.
This game is played in a casual way. When you have taken your turn, your opponent is notified by e-mail that it is now their turn. However, they may not take it straight away. Typically, expect to take a turn and then wait about a day to take your next turn. Of course, you can play as many concurrent games as you can handle if you get bored in the meantime.
Grunt30 is the current champion!