Slither.io Unblocked Game, Do you really enjoy classic games? Then you could try this game here! This is about the famous snake trying to devour as much as possible! Come and help her grow as big as possible while blocking other snakes in the way! So then, have fun with this great game! Slither.io unblocked is one of our coolest games in which you control a snake with a big appetite. Slither.io is an updated version of Agar.io. Your main goal in this game is to make the snake bigger and longer by feeding it. If you meet another snake along the way, you will die. Try to block the way for other snakes. Have fun playing Slither io.