Pixel Game Engine

That game you've always wanted to make?

Describe your idea, create with your AI, and play your game.
Describe your ideaCreate with your AIPlay your game

Build it this weekend.

Quill is a new kind of game engine for the AI age, with source code and tools for your coding agent. BYOA: Bring your own agent.

Play PDX Punk

Created with Quill over one weekend by indie developer, Phil.

Play Now
QUILLCOLOR SYSTEM
VHF
UHF
ON AIR
01

Create a fascinating cast.

Original characters that walk, run, jump, and dash. Clothing colors change without replacing the character.

Character
Movement
Clothing color
Walk, run, jump, dash. Make it your own.

Animation frames · Walk / Run / Jump / Dash

Walk
Run
Jump
Dash
02

Build a beautiful world.

Layers that give a place depth. Rain, river, and light. Make a world people want to spend time in.

Visible layers
Weather and light
Burnside Bridge and the Portland riverfront at dusk
Explore the layers of Burnside.
03

Compose haunting music.

Set the mood with music. Add rain, footsteps, and sound effects.

Crimson Nave

Music · Gothic cathedral

0:000:00

04

Create a branching dialog.

Give your characters something to say—and your players a choice.

Pick a reply and follow its branch.

Philip

You hear that signal too? Someone’s broadcasting from under the bridge.

05

Multiplayer with all your friends.

Up to 100 players.

Six friends at Burnside: Man jumping, Witch dashing, Woman running, Detective and Ghost chatting, and Dog running alongside them
Six friends. One world. Staged in Quill's multiplayer engine, with in-game chat.
Try PDX Punk

Use your AI sidekick.
Just ask it anything.

Start with PDX Punk’s source code and game assets. Quill’s skills and plugin give your coding agent the tools to create characters, worlds, music, and stories. Bring Claude, ChatGPT, Kimi, or another coding agent.

  • ChatGPT
  • Claude
  • Kimi

Skills for making your game

Create characters, build worlds, and bring your game to life with skills for your AI sidekick.

  • Characters

    Create pixel characters, clothing colors, walking, running, jumps, and dashes.

  • Levels

    Build places to explore, with scenery, lighting, weather, atmosphere, and points of interest.

  • Animation

    Bring characters and scenes to life with animation sequences and cutscenes.

  • Physics

    Shape movement, collisions, jumping, gravity, and how objects behave.

  • Music

    Compose soundtracks, prepare loops, audition tracks, and place them in your world.

  • Sound effects

    Create and place footsteps, ambience, and sounds for game actions.

  • Dialogue

    Write branching conversations, cast voices, record speech, and connect it to the game.

  • NPCs

    Give your world people to meet, with placement, animation, interactions, and dialogue.

  • Multiplayer

    Build shared worlds, player sessions, and interactions between players.

FAQ

What kind of games can I build?
You can build any 2D or 2.5D pixel art game, with physics, characters, multiplayer, and more.
How long will it take to make a game?
You can have a prototype up and running in 1–2 hours. A full, finished game requires love and care, taste and iteration, and can take as long as you want.
Can I publish or sell my game?
Yes. Modify PDX Punk, make it your own, and publish or sell your game.
Are AI subscriptions included?
No. Bring your own coding agent and subscribe to the services you choose.

What's in the Box

Full documentation, setup, and a tutorial, plus game assets to customize and skills to help you make it yours.

  • Full source code for the PDX Punk game
  • Full source code for the Quill game engine

Eight skills for your coding agent

  • Character creation
  • Level creation
  • NPCs
  • Dialogue and voices
  • Game music
  • Multiplayer (optional)
  • Development server
  • Browser testing

The tutorial starts with a single-player game. The multiplayer skill helps you add shared worlds and player interactions when you ask for them.

Requirements

Your own coding agent with a paid plan

I recommend ChatGPT Pro, Claude Pro, or Kimi Pro.

Recommended creative tools

For new game art, I recommend ChatGPT Images 2.5. For voices, music, and sound effects, I recommend ElevenLabs.

Subscriptions and usage for these services are purchased separately.

That game you've always wanted to make? Build it this weekend.

Describe your idea, create with your AI, and play your game.
01

Describe your game.

Tell your AI assistant about the world, characters, and story you have in mind.

02

Let your sidekick create.

Quill gives your assistant the tools to turn that idea into a pixel game.

03

Play. Then dream bigger.

Try your game in a browser. Ask for a change. Keep making it yours.

You get PDX Punk's source code and game assets, plus Quill's skills and plugin for Claude, ChatGPT, Kimi, and other coding agents.

Modify PDX Punk. Publish or sell your own game.

BYOA: Bring your own agent.

Follow Quill's development.

Get Quill release announcements, new engine features, and examples of games built with Quill. Follow Phil on Substack for Quill news and updates.