http://store.steampowered.com/app/518660 This is a game that came out 5-6 years ago, it was published by OGPlanet and did somewhat well, it's incredibly niche as it's a beat em up mmorpg....ya....imagine Streets of Rage or Final Fight. People like to compare it to Rumble Fighter Online. Personally though, I think Rumble Fighter is more like Castle Crashers while Zone4 is more like Streets of Rage and I prefer the Streets of Rage style game than Castle Crashers.