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JellyBlob

by Kvickan .io · Action · made with GPT

Grow a wobbly jelly, trap rivals with your trail and go Supernova in a shared pond.

Phone friendly Online multiplayer Plays in your browser
Play now Opens on jellyblob.win in a new tab. Come back here to rate it.

Checked working on Oct 9

  • Mouse, WASD / arrow keys steer
  • Click / Space hop
  • Hold click, Shift or right mouse to surge

5.0 from 4 ratings
  1. 5 stars, 4 ratings
  2. 4 stars, 0 ratings
  3. 3 stars, 0 ratings
  4. 2 stars, 0 ratings
  5. 1 star, 0 ratings

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About the game

Start as a small jelly in a pond you share with other players online, and grow by eating glowing dew. Every jelly leaves a trail behind it, and the game's own advice is to cut other jellies off.

Splats from touching someone else's trail. Supernova, seven seconds of extra speed and pull, set off by a full Glow meter. Immunity to trails, and smaller jellies swallowed on contact, during Supernova. Blue currents, faster when ridden the right way and slower against them. Power bubbles for a magnet, a shield or a turbo. Daily, weekly and run quests between rounds, plus a level track and a cosmetics locker. The paid color unlock Color Shift.

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Steer with the mouse, WASD, the arrow keys or a thumbstick. Hop with a click, Space or the on-screen button. Hop over a trail when you're boxed in. Vaulting a trail fills the Glow meter, as do close calls, splats and combos. Land a hop on a much smaller jelly to burst it flat. Hold Shift or the right mouse button to surge. Surging costs size, and the goo you shed becomes food for everyone else.

Its creator steered AI to write all of the code over hundreds of rounds, feeding it input and instructions. The game was first built with one AI model and then remade with another.

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It ranks #181 of 570 games all-time. 5.0/5 from 4 ratings. Ratings as of Oct 9, 2026, 21:05 UTC. How rankings work

Something wrong with this game?

You can also email us at hello@gamesbyai.win and tell us what you found.

How it was made

Source: The creator's own statement. Evidence: the creator's own account.

Added
Code by AI
All of it
AI provider
OpenAI, Anthropic
AI tools
Codex, Claude Code
Engine
Three.js
Genre
.io, Action
Players
Online multiplayer

AI wrote all of the code, with hundreds of iterations from my input and instructions. Initially made with GPT-6 Astra in Codex, then remade with Claude Opus 5.5 in Claude Code.

— Kvickan
Make one like itCodex game development with a clear finish line

Controls

  • Touch
  • Keyboard
  • Mouse
  • Mouse, WASD / arrow keys steer
  • Click / Space hop
  • Hold click, Shift or right mouse to surge
  • Keys 1–4 for emotes
  • Touch drag to steer, HOP and SURGE buttons

Screenshots

Watch it played

These come from YouTube channels that link to this page, and each one opens on YouTube.

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Questions

Who made JellyBlob?

Kvickan made it. They also made Vesper: The Last Light. Their profile here lists both games.

Can I play JellyBlob with friends?

Yes. It has online multiplayer, so friends can join from their own computer or phone without being in the same room.

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