Play Newgrounds Rumble, the free online game at slotsonlinegambling.review! Click now to play Newgrounds Rumble. Enjoy the best games related to. A high-intensity brawler themed upon Newgrounds and its characters. 10 unique fighters, 11 arenas, and several modes of play. Newgrounds Rumble is a game submitted by Luis, MindChamber, and NegativeONE on May 29, It features twelve Newgrounds characters that fight in Audio used : Newgrounds Rumble Theme.