Slither Birds unblocked is a great mixture of Slither.io and Angry Birds. Slither Birds io game is totally playable in a browser and it will keep you fascinated. You are a snake bird roaming the map to gather a lot of eggs for growing in size. Then, you use your big body to encircle other enemies and make them run into you. But still, you should elude the enemies that are larger than you, or else you will end up getting destroyed. Will you become the most feared snake bird in the arena?