A highly addicting and super casual game is called Snake, Blocks and Numbers. It is quite easy to control, but at the same time it presents a lot of challenges. Get as far as you can while you're on all fours and pick up points to improve your length. The more stars you collect, the more interesting snake skins you'll be able to unlock. There is support for global leaderboards. Participate right now to move up the ranks in the leaderboards!
Controls:
Move your snake by dragging it with your mouse or finger. Gain height by accumulating points while avoiding collisions with blocks bearing large numbers. To access new, cool snake skins in the shop, collect stars.