Please Stop Evolving

It was a duck. Three merges ago.

A small physics puzzle about suspicious animals and very bad decisions. Drop a creature, merge matching weirdos, and discover what they turn into next.

One more merge?

• Unlock 4 evolution routes and 22 unique creatures: Breadwinners, Corporate Cats, Unbothered Capys, and Space Is a Duck.
• Big evolutions take more space and leave junk that cannot merge. Every route makes a different mess.
• Cash out to keep your points. If the pile stays over the warning line for two seconds, the run ends and its unbanked points are lost.
• New discoveries and unlocked routes stay in your collection even when a run fails.
• Pick another unlocked route in Routes & Collection. During a run, the button banks your score before starting the new route.

Controls

Aim with the mouse and click to drop. Or use Left / Right and Space. P pauses. Sound is off initially; use Sound to enable it. English is the default, with optional Chinese.

Recommended for desktop browsers. The layout also adapts to touch screens; physical mobile-device coverage is still limited.

Your collection

Discover Breaduck to unlock cats, Spreadsheet Cat to unlock capybaras, and Turboduck to unlock the cosmic duck branch. Each route has its own best cash-out. Can you resist one more evolution?

Privacy & saves

The game saves language, discoveries, route choice, and records in this browser only. It does not save a running physics board. Clearing browser data removes the collection; progress does not sync between devices. If browser storage is unavailable, progress lasts for the current page visit. There are no in-game ads, payments, accounts, or remote gameplay analytics. itch.io may process its own hosting and page-analytics data under its privacy policy.

Credits

Created by ekinyee with generative-AI assistance for code, text, and original procedural 3D artwork. The game uses Matter.js under its included MIT license. Version 0.2.0.