This jam is now over. It ran from 2026-05-01 18:00:00 to 2026-05-03 18:00:00. View results

Spend a weekend making a game using Karl2D and Odin!

What?

  • Karl2D: A library for creating 2D video games that is beginner friendly and easy to modify.
  • Odin: An efficient programming language that focuses on the Joy of Programming.
  • Combined: Have fun while making a game!

When?

  • Start: May 1 20:00 CEST (intro live stream starts 30 minutes before)
  • End: May 3 20:00 CEST

How?

  • Download Odin from https://odin-lang.org/
  • Download Karl2D from https://github.com/karl-zylinski/karl2d
  • When the jam starts, make a game. Submit it to this jam page before the the jam ends.
  • If possible, submit a web build, otherwise few will play your game.
  • Confused? Read the Getting started guide on the Karl2D GitHub repository. Also, I'll do a live stream 30 minutes before the jam starts, where I show how to get going. It'll be on my YouTube channel.

Rules

  • The game must use Karl2D in a substantial way.
  • No vibe coding: You must understand and feel ownership of the code.
  • Submit before the end!

Voting

  • When the jam ends, then you can play the other games and vote!
  • Voting ends on May 10 20:00 CEST (1 week after the jam ends).  I will reveal the winner on a live stream on my YouTube channel.
  • Only the submitters can vote. If you are multiple people on a team, then use the submitter as the "vote of the team".
  • To increase your chances of getting voted on, make sure to upload a web build of your game.

Voting criteria:

  • Enjoyment: How fun, interesting, innovative and well designed was the game?
  • Graphics: Did it look nice?
  • Audio & music: Did it sound nice?

Award

The winner gets:

  • A spot on the front page of the Karl2D website: https://karl2d.com/, with links to their game and social media accounts.
  • One hour private video/audio call where we discuss anything gamedev related: Programming, marketing, shipping, production, graphics, sound, etc.

The top 10 games will be featured in a "Karl2D Jam Showreel" video on YouTube.

Discord Community

Chat with other participants in the #karl2d-jam channel on my Discord server!

Have fun!

Submissions(49)

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Browser playable (49)

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A short game about puzzles in a book
Puzzle
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Slide tiles, trap enemies, and seal the rift before your court collapses.
Strategy
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Action
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You're a piece of kibble against mighty hungry cat Alice.
Action
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Feed data to the machine in this Windows 98 inspired incremental game.
Simulation
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shoot it!!
Action
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Strategy
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A lumberjacking incremental madness about collecting logs and selling them
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Help Denzel the cat escape planet K-9
Strategy
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Short scoundrel-like made for Karl2d gamejam!
Adventure
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game made with odin + karl2d for Karl2D Jam 2026
Simulation
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Shotgun yourself up
Platformer
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Simulation
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Action
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make sure dinner service goes smoothly
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Bomb cows avoid rockets
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Action
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Fight the grey aliens, collect the treasure and advance to ever larger levels
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Karl2D jam entry
Adventure
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for karl2d gamejam 2026
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Entry for Karl2d Jam
Adventure
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I meant to make an asteroid buster but made a sketching app instead ...
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Karl2D Jam Submission
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Action
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​A game about time.
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submission for karl2d game jam
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A rhytmic game about snake
Rhythm
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(incomplete) Karl2d Game Jam Submission
Rhythm
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For the Karl 2D Game Jam
Action
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Puzzle
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Gonchi needs to get off this swamp planet. Help him find freedom!
Puzzle
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Puzzle
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play cards and fill in the grid
Card Game
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DtMF
Action
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Do you think you have what it takes to be a pirate captain?
Action
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Simplest clicker game for Karl2D Jam
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One button horizontal scroll platformer
Platformer
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A momentum-based physics game
Action
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A very simple Sliding Puzzle game.
Puzzle
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hammer platformer
Platformer
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You just throw ice cream at clones and collect powerups.
Action
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Karl2D Game Jam Entry
Shooter
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Help your coworker clean up space, one asteroid at a time.
Action
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Simulation
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.hack style game
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