I participated in the beta for Rumble and while it's not my cup of tea, it's not a bad game. It definitely isn't Worms though; and that's why people are so pissed off by it. Rumble, at its core, is just a mindless arena action game played in 2D that will probably be entertaining for a lot of people. Some of the mechanics are very confusing at first. I won't be buying it unless it goes on sale very cheap and is shown to have an active player base.