Experiments people built

Cool things people built. Find something worth trying.

Infinite Hallway A website that is just a hallway. Every door opens onto a note left by the last stranger who walked through it. Weird, Experiments · by @doors.exe
Gravity Sand A falling-sand physics toy. Pour water on lava, grow plants, tilt your phone and watch everything slide. Experiments, Games · by @ok_particle
Orbit Toy Drag to throw planets into space and watch gravity make a mess of them. Surprisingly hard to build a stable system. Experiments, Vibe coded · by @threebody