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Snake against everyone. Eat glowing orbs to grow. If any snake's head hits your body, it dies and drops its whole length for you to eat. 2016, Steve Howse (Lowtech Studios).
Slither.io is a free snake io game (classic, free-for-all). Slither.io and its descendants. Grow long, cut people off, never touch another body with your head. It ran when last checked, on 2026-09-16.
The game loads from slither.io in a frame. Its own terms, privacy policy, ads and accounts apply inside it, and a save made here is separate from one on slither.io. If you already have progress there, open the game on its own site. How the frames work.