The first .io games were cursors.io and voar.io, the latter now offline. But the real .io trend began with agar.io, which was followed by other great games like slither.io and diep.io. Most .io games are based in older single player games, and what makes them great are the following principles: Easy to get into (generally no download required), simple controls, massive online and the possibility to became stronger than the rest.
In Braains.io Zombies most favorite meal? Answer is: human brains. And this is what the latest game from .io games family is about. Human brains are delicate and tasty – at least for an ordinary zombie. Play as a zombie, and try to tag every human that comes to your sight.