Stone Protectors

Beat'em up. Evil green monsters attempt to steal a certain crystal. Its guardians, being unable to resist the onslaught of the enemy, send the stone in pieces to Earth, where it falls into the hands of 5 dudes. They, thus, turn into stone defenders, and all the burden of fighting green evil falls on them now. That means you. You choose a hero and go to beat the bastards. The game action is standard - you go forward, eliminating all in a row, including bosses at the end of levels. The game is for 1-2 players.