I know a fast to play and french online game if you want : It's a fight-like with some simples rules. Just create a character (name and design, no mail required) and select some players to fight. Everyday you can fight three times, except the first time you have six fight to engage. The more you fight the most you upgrade your player. It's an easy and casual game made with Flash Technology. It's look like an anime game with some manga graphics. You don't have to know french language to play but if you need some translation just ask to me
Just try :
and tell me if you like it