Mechacraft.io – Browser Vehicle Builder
Browser vehicle builder, but Unity WebGL demos already do this better.

Browser-based vehicle physics sandbox that runs Besiege-like builds without installing Unity.
Gamers, hobbyist engineers, browser game enthusiasts
Besiege · Scrap Mechanic · Stormworks
I will continue polishing the game daily so there is more to come :D but the core is in place. I would really love to add multiplayer soon.
Browser vehicle builder, but Unity WebGL demos already do this better.
Replaces eval() with typed sandboxing while JEXL and jsonata already exist.
Hand-drawn physics sandbox inspired by XKCD's machine and The Incredible Machine.
Finally solves breadboard spaghetti wiring with a dedicated digital planning canvas.
Git for AI intent—content-addressable ledger captures edits without agent cooperation.
Factorio-lite in a CodePen with live dev mode and saveable configs.