BioCage. Evolution sandbox game. Hunt, feed and evolve to become stronger and bigger. Killing monsters heals you, while eating dead corpses heals you and makes you evolve (45 different evolution). Your mutations depend on what you feed on. Will you survive long enough to unlock difficult evolution? Will you be able to achieve a high score? Move with your mouse and attack/feed by clicking/holding the left mouse button. This game is one of the action games on Round Games. Enjoy and have fun in playing this free online game. Good luck.