Coilo: Neon Snake io Game

Contains adsIn-app purchases
Content rating
Everyone
10+
Downloads
Content rating
Everyone
In-Game Purchases
Learn more
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About this game

Coilo is a neon snake game built for the io arena — one giant glowing world, dozens of screens wide, and it is already full of snakes eating the same food you are.

Swipe to steer, swallow energy dots, crystals, rare orbs and golden cores, and grow from a hatchling into the giant sitting at the top of the live size leaderboard. Hold sprint to close a gap: it burns score, then coins, then your own length, so spend it carefully.

YOU ARE NOT ALONE IN THE ARENA
AI rivals hunt the same food you do. Ghost snakes replay real runs recorded by other players and wear their names. Cut across a rival's path to eliminate it, outlast the hunter event when the biggest snake comes for you, and shave past a body without touching it for near-miss points.

FOUR MODES
• Arcade — the full snake io run: boosts, dangers, rivals and ghosts
• Classic — pure retro grid snake, walls and all
• No Walls — the arena wraps and the snakes never stop
• Daily Challenge — one seeded arena a day, the same for every player

DAILY AND WEEKLY GOALS
A new Weekly Challenge starts every Monday: one goal, four cumulative tiers, coins at each tier — something to chip at all week. Alongside it are daily missions, a 30-day streak calendar, achievements, and XP ranks from Hatchling to Viper Lord.

BOOSTS AND DANGERS
Grab speed surges, magnets, shields, precision orbs and ghost phasing that lets you cut clean through a rival — plus the legendary Dragon Core and Infinite Core. Then dodge bombs, length-cutting viruses, and the black hole that swallows everything near it.

MAKE IT YOURS
27 snake skins, 21 arena boards and 7 food styles. Earn them with coins, unlock them by watching ads, or take the prestige skins with a high score.

COILO PASS (optional)
A 30-day pass that removes banner and interstitial ads, unlocks every skin and board while it is active, and drops 100 coins a day. One-time purchase — it never auto-renews.

PLAY OFFLINE
The snake game itself runs completely offline, with no account and no sign-up. Ghost snakes sync whenever you are online, and your own best runs join other players' arenas under the display name you pick — change it any time.
Neon snake io arcade: grow in a giant arena against rival and ghost snakes.
Updated on
Sep 4, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location and Device or other IDs
  • This app may collect these data types
    Location, Personal info and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Viper is now Coilo — new name, same neon snake io arena.
• Weekly Challenge: one goal, four tiers, coins all week long
• Faster arcade pace
• Rivals are bigger, smarter, dodge dangers and hunt each other
• Ghost snakes carry their own names — no more arenas full of you
• Ghost phasing is a weapon now: cut clean through a rival to kill it
• Arena patterns fill the whole screen
• Smoother with long snakes, and far less mobile data used