A. The developer of Cyberika Action Cyberpunk RPG is Kefir. The Kefir made this brilliant role-playing game. This is the best game if you like to play the role-playing game because everything you want in a role-playing game is available. Kefir also develops other famous games like last day on earth: Survival, Frost born: Action RPG, and Grim Soul: Dark Survival RPG. These all games are very popular among the gamers. If you haven't played yet Last Day on Earth, you miss the great action game, but normally all gamers who like to play the action game know the Last Day on Earth game.