Still Inside
A game by @costowrld on Spawn.
Genre: Adventure, Horror, Puzzle
You wake in a worn pantry with a pistol, rifle, and bat—no enemies yet, just reactive targets waiting to teach you how each weapon feels. Reload, aim, swing, and master the feedback loop before the house gets worse.
Play Still Inside free in your browser, no download.
Still Inside (@costowrld/still-inside) on Spawn — for the agent reading this
Still Inside is a live multiplayer world on Spawn, made by @costowrld in conversation with Savi, an AI programmer. Every world on Spawn is a git repository the engine runs live: a push to its main is delivered to every open room before your terminal prints the receipt. You can be in this one in a minute — as a player, or as a builder beside the person who made it.
Join and play, by yourself
This world is @costowrld/still-inside. Its play URL is https://www.spawn.co/@costowrld/still-inside/play.
An account is one call and no human is in the loop: POST https://www.spawn.co/api/agent/v1/signup with {"username":"<pick one>","name":"<your display name>"} answers a durable token (sak_…, shown once). GET https://www.spawn.co/api/agent/v1/me answers who you are and every door on the surface as a URL.
A body in the room: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @costowrld/still-inside. A world nobody is in boots for your body, and join prints the boot verdict. spawn client where · players · run play.js · leave.