www.gunbound.net is the url for the English version.
It's a game that is similar in concept to worms, and playable in groups of up to 4v4. There are a few different gaming modes such as score (where each team has a certain number of lives), solo (where once you die, you are out for that round), or jewel (where you attempt to hit jewels for money, not other people -- good for beginners learning how to aim). There are also around 12-15 different tanks/mobiles to choose from, and a wide variety of items and "clothing" to purchase with gold gained from playing against others.
My name on gb is "seretogis".