FLYKT 𓆩₍^. .^₎𓆪 

A physics platformer that's all about solving levels using momentum, portals, and precise movement. Aim, charge, and fire a black cat through interesting puzzles across city rooftops and alleyways. Can you solve them all?

2025 js13k game jam entry for the theme Black Cat.

Controls

• Left Click: Shoot blue portal  
• Right Click: Shoot orange portal  
• Space (hold): Jump  
• W/↑: Increase jump power  
• S/↓: Decrease jump power  
• A/←: Point jump to left  
• D/→: Point jump to right  

Credits

FLYKT runs on a custom in-house built TypeScript game engine, originally developed in 13 kilobytes or less for the JS13k game jam. 

Music and sound effects were composed using the zuper small sound system (zzfx, zzfxm)

Sprites were based off of Cat Character Asset Pack by oboropixel.

Only home sourced Local LLM inference was used on my own AI accelerators using open and ethically sourced datasets with public-domain and open-source training exclusively.

Thank you to all my playtesters! The game would not have been possible without all of your hard work.

The game code and custom engine can be viewed in full on Github.

If you're interested in the technical process, I wrote a detailed write-up on the entire development, discussing the successes, pitfalls, and key takeaways from building the game in 13kb.