On August 29, 2013, the game's servers were shut down. FusionFall used the Unity engine as its client technology basis.įor the first year, the full game required a subscription free accounts could only access a portion of the content. Massively multiplayer online role-playing game, third-person shooterĬartoon Network Universe: FusionFall was a massively multiplayer online game developed by Cartoon Network and South Korean studio Grigon Entertainment.