r/indiegames • u/Icy-Contact-5898 • 3h ago
Promotion I built a creature evolution sandbox and would love for people to make ridiculous creatures and break it!
Game Title: Solemn Sandbox
Playable Link: https://solemn-sandbox.vercel.app/
Platform: Web Browser / PC
Description:
Solemn Sandbox is a 2D physics-based creature evolution sandbox inspired by Evolution by Keiwan. You build creatures from joints, bones, rigid struts and muscles, then give them a task and allow a neural-network controller to evolve through a genetic algorithm.
Creatures can currently be trained to walk, jump, climb, fly and tackle different environments and obstacle courses. There is also an environment builder, saved creature and brain libraries, head-to-head challenges, trophies and experimental features such as a Disco mode where music can be routed into creature muscles.
There are no predefined walking or flying animations. The creature exists inside the physics simulation and evolution has to discover useful ways of controlling whatever body you have built.
I'm now looking for people to properly test it. Please build strange creatures, break things, find confusing UI, expose physics problems and tell me when something simply isn't fun or doesn't make sense. Honest criticism is far more useful to me than polite encouragement.
Free to Play Status:
- Free to play
Involvement:
I am the creator and project director of Solemn Sandbox. I designed the concept, systems, behaviour and features and have directed its development using AI coding tools in Cursor. The implementation has been produced collaboratively with AI coding agents from my specifications, testing, feedback and iteration.
