I don’t remember one of .io unblocked games being about under water. Play Deeeep.io unblocked game for free online deep of a sea as another survival game. Name your fish and select an avatar for it. All enemies will be in attack mode every time! You need to be quick and sober all the time not to be bait for ‘em! Move with mouse and have baits for getting greater. As you grow, possibility of being bait will decrease automatically. There also is an old version of Deeeep.io unblocked game inside it!
How to Play?