BLOBBY VOLLEY 3D
DEEN Deutsche Version
Two neon blobs in the Temple Court arena: the cyan blob swings at the glowing ball, the orange one jumps to block.

Free couch party game - macOS + Godot project

100% made with AI

The classic blob volleyball, rebuilt as a glowing low-poly arena game - plus six more party games for 2-4 players. Free to play, free to fork.

Download for macOS Godot project (MIT)
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  • 7 games
  • 14 arenas
  • 2-4 players
  • Rollback netcode
  • No cookies
  • No tracking
  • No external requests
  • 100% AI-built
  • MIT licensed

01 // Games

Seven games. One blob.

Every game is couch multiplayer first - keyboard halves and gamepads on one screen - with an online option. Pick one in the lobby, add CPUs, press start.

1v1 - local, online, vs CPU

Blobby Volley

The original duel, rebuilt in 3D. Smash, smash serve, classic side-out or rally rules - on deterministic 120 Hz physics where nothing ever tunnels through anything.

2-4 players

Blobby Volley 2v2

A court with depth: three touches per team, every touch charges your power smash. Power-ups GROW, SHRINK, BOMB, TURBO, CHARGE - and team mates bump each other.

2-4 players

Blob Brawl

Platform fighter where the ball is the trophy: hold it to fill your meter, every hit knocks it loose. SHIELD, GIANT and BOMB power-ups. Classic stocks mode included.

2-4 players

Blob Race

Elimination race on a deep track. The left screen edge kills - shove, stomp, grab and throw, and catch the golden ball for an extra point.

2-4 players

Blob Micro Racers

Tiny cars on giant tables: breakfast, workbench, kids' desk, pool table. Drift for mini-turbos, rocket starts, ramps over gaps, items.

1v1, 2v2, with CPUs

Autoball

Car football without flying: blue vs orange on a glass-walled island pitch. Boost pads, jump, dodge, powerslide, golden-goal overtime.

4 vs 4 from above

Blob Tactics Soccer

Everyone plans at the same time, then all moves play out together. Dash, tackle, hold, kick and pass - and the arrows show exactly where you will stop.

Secret

Flawless ???

Win a classic Volley match without conceding a single point... and see what happens to the loser.

02 // Made by AI

Zero lines written by hand.

Every line of code, every 3D model, every shader, every test - and this website - was written by AI models. A human set the direction, made the calls and play-tested. Here is the honest breakdown.

3

days of development

29 Sep - 1 Oct 2026

  • ~24,800

    lines of GDScript

  • 90

    scripts

  • 47

    shaders

  • 12

    Python tools (Blender + Gemini)

  • 27

    automated test suites

  • 14

    releases (v1.0 - v1.12)

  • 7

    game modes

  • 14

    arenas

  • 48

    announcer voice lines

  • 3

    music tracks

  • 31

    devlog entries

  • 59

    devlog screenshots

Who did what

Anthropic

Claude

Code, 3D, shaders, tests, docs

  • All game code: physics, rules, rollback netcode, CPU opponents, UI
  • All Blender scripts: blob model and rig, 14 arenas, props, animation retargeting
  • All shaders, all automated tests, the devlog
  • This website

Google

Gemini

Concept art, voice, music

  • Gemini 3 Pro Image: concept art and style exploration
  • Gemini TTS: the gravelly tournament announcer
  • Lyria 3.5: three original arcade-techno tracks

Human

Leonhard

Direction, decisions, play-testing

  • Picked the style, the games and the rules
  • Play-tested every version and sent the feedback
  • Had the ideas the AI would not have had - see below

The human in the loop

Real play-test feedback from the devlog - the prompts that shaped the game.

  1. > Prompt // #26

    I don't survive 10 seconds in Micro Racers - is the screen rule only for players?

    Leonhard

    Result v1.7: a camera that zooms out, catch-up speed, cars that can always turn.

  2. > Prompt // #27

    Once the driving works: a micro Rocket League without flying - Autoball.

    Leonhard

    Result v1.8: Autoball, built on the Micro Racers handling.

  3. > Prompt // #28

    The blobs are a bit too see-through, sometimes you lose them. There is no music - the sound effects go down really well.

    Leonhard

    Result v1.9: solid blobs, three original tracks - and a secret.

  4. > Prompt // #29

    Can the side you play on be shown mirrored, e.g. if someone has a hard time on the right?

    Leonhard

    Result v1.10: "Right side: mirror view" - your opponent never notices.

  5. > Prompt // #30

    A rendered scene, not a drawing.

    Leonhard

    Result v1.10: the loading screen is now a real in-game render.

  6. > Prompt // #31

    Blob Race needs depth - everyone running behind each other is far too hard. They should start side by side, and maybe chase a ball that gives points.

    Leonhard

    Result v1.12: lanes in depth and the golden ball.

Concept to game

Day 1: Gemini painted the target look. Then Claude rebuilt it in Blender and Godot. Drag to compare.

Screenshot of the Spike Bridge arena in the game.
Concept art of the Spike Bridge arena: neon low-poly bridge with two glowing blobs.
Six blobs in different neon colours standing in a row.

Pick your colour.

One jelly shader, endless blobs. Faceted, glowing and a little bit wobbly.

03 // Features

Built for the couch.

  • Couch multiplayer 2-4

    Two players per keyboard (WASD and arrows) plus any standard gamepad - Xbox, PlayStation, Switch Pro, 8BitDo. Hot-plugging included.

  • Controller-first menu

    Boots straight into the lobby while the selected game plays itself behind the menu. Press A to become player 1 - no mouse needed.

  • Online + LAN, rollback netcode

    GGPO-style rollback, LAN discovery or direct IP. Soak-tested with 50 ms latency, 30 ms jitter and 10 % packet loss: zero desyncs.

  • CPU from Easy to Elite

    Four levels for every game. Fill empty seats with CPUs - or watch four Elite bots fight it out.

  • Music + announcer

    Three original 90s-arcade-style tracks and a gravelly tournament announcer with 48 voice lines.

  • Mirrored view

    Playing on the right? Mirror the picture so your blob is always on the left. The game and your opponent never see a difference.

04 // Devlog

From blank folder to v1.12.

31 devlog entries, 59 screenshots - every decision, every bug, every feedback round. Here are the highlights.

Read the full devlog
  1. Day 1#02 Style exploration Gemini painted 12 concept frames in three styles. Leonhard picked Neon Grid. Read entry
  2. Day 1#04 The blob is born Modelled and rigged by a Blender script - what you see is exactly what collides. Read entry
  3. Day 1#07 Goodbye, snowman Feedback: the blobs looked like two stacked balls. New physics shape, little feet. Read entry
  4. Day 2#15 Blob Brawl The first party game: a platform fighter with grabs, throws and the ball as a weapon. Read entry
  5. v1.2#18 Tactics Soccer 4 vs 4, everyone plans at once - and the arrows show the exact stopping point. Read entry
  6. v1.3#20 2v2 with depth Three touches, a charge meter, power-ups, friendly fire - all Leonhard's ideas. Read entry
  7. v1.3#21 Ten new arenas Ember Throne to Void Portal: 14 arenas from one Blender script. Read entry
  8. v1.5#24 Micro Racers Tiny cars between mustard and jam, drifting for mini-turbos. Read entry
  9. v1.8#27 Autoball Car football without flying, on a glass-walled island pitch. Read entry
  10. v1.10#30 A rendered loading screen Staged in the game itself: a classic Volley moment in the Temple Court. Read entry
  11. v1.12#31 Trophy Brawl + golden ball Two games rebuilt in parallel by two AI sub-agents, then tuned together. Read entry
  12. And it keeps going. Every entry with all screenshots, test logs and the bugs found on the way. Read the full devlog

05 // Download

Free. No account. No strings.

Download the game for your Mac, or grab the complete Godot project and make it your own - MIT licensed.

Version 1.12

macOS app

macOS 11 or newer - Apple Silicon or Intel

Size
83.7 MB
SHA-256
fe76c3656ee99af3525d6f9a42e69e5955cfd840acd04b5c7b9026a08df6830d
Download for macOS

BlobbyVolley3D-macOS.dmg

Version 1.12

Godot project

Godot 4.7 - open project.godot and press Play

Size
43.3 MB
SHA-256
18cfbd31527dfe3e625041410abb2772f04eb707e78a613698481ea4e548be13
Download project (ZIP)

BlobbyVolley3D-Godot-Project.zip