Full game metadata
| Field | Value |
|---|---|
| Steam app type | game |
| Steam App ID | 4701600 |
| Live current players | 0 |
| SteamPulse tracked peak | 1 |
| Live count (today's peak floor) | 0 |
| Price | $4.99 |
| Free to play | No |
| Discount | 0% |
| Original price USD | $4.99 |
| Current price USD | $4.99 |
| Release date | May 19, 2026 |
| Developer | Lunder IT |
| Publisher | Lunder IT |
| Owners estimated | Not available |
| SteamSpy owner estimate minimum | Not available |
| SteamSpy owner estimate maximum | Not available |
| Review type | Not available |
| Positive review percent | Not available |
| Positive reviews | 0 |
| Negative reviews | 0 |
| Total reviews | 0 |
| Steam recommendations | Not available |
| Achievements | Not available |
| Average playtime forever | Not available |
| Windows support | Yes |
| macOS support | No |
| Linux support | No |
| Parent game | Not available |
| Store URL | https://store.steampowered.com/app/4701600/ |
Short description
Run virtual evolution and watch bizarre creatures learn to walk, jump, and crawl from random genes. A modern recreation of Karl Sims' 1994 evolving virtual creatures with MuJoCo physics, tunable gravity and population, plus tools to save, clone, and replay your champions.
About this game
Watch creatures invent themselves. LIT Creature Forge is an evolution simulator based on Karl Sims' 1994 paper "Evolving Virtual Creatures." Start an evolution and see random segments evolve. The ones that move farthest reproduce, with mutations. Run another generation. Repeat until something organic crawls out of the chaos. Starting with V1.1, there are now also swimmers, and creatures fighting over the possession of a cube. There is no design tool. There is no creature editor. Bodies, sensors, brains, and gaits all evolve together without any human input. What you'll see Body plans that lurch, hop, tumble, slither, and occasionally do something physically reasonable. Gaits that develop personality. A cautious shuffle here, a casually-swinging trot there. Asymmetric creatures that shouldn't work but absolutely do. Quadrupeds with their rear legs attached to their head, bipeds that lean into a permanent forward fall. Champions that emerge over a few hundred generations and look like deliberately-designed animals (they aren't) Why this version The 1994 paper has been replicated many times. Most replications either run on stiffer physics solvers that produce visibly robotic motion, live in academic codebases not meant for hands-on use, or skip the genetic-programming controllers in favor of simpler oscillators. LIT Creature Forge is a Sims-faithful recreation built on MuJoCo (modern constraint physics). The result reads as organic motion. Just creatures moving the way creatures move. Tunable, not over-engineered Population size, trial duration, gravity. Adjust and watch what evolves differently. Lower gravity opens up jumpers, rollers, and ballistic-phase gaits; higher gravity rewards stable grounded walkers. Save any champion and replay them in an isolated showcase arena with free camera, for footage, for showing friends, or just to watch your favorite creature trot indefinitely. No tutorial-driven progression, no "unlock new biomes." It's a sandbox. You watch evolution. What this isn't Not a creature designer. (You don't make the creatures. Evolution does.) Not a goal-based game with progression or winning conditions. Not realistic biology.…
Supported languages
English