Sworm.io is a fresh take on slither-like IO games. Starting out as a small worm you collect energy and grow. Every bug you encounter gives you some armor that will be useful in battles with real players. You can chew through things with your right mouse button and speed up by pressing the left mouse button. Beware: by doing it you lose energy like crazy and become shorter as a result.
This game features outstanding and well-optimized graphics: the textures a sleek and precise, the colors are nicely saturated and there are even some lighting effects that make worms look absolutely gorgeous (as far as worm-beauty goes).
If you like classic snake IO games, you will probably enjoy Sworm.io.