Gravenight
A game by @devcat on Spawn.
Genre: Survivors, Action, Horror
Survive ten minutes of endless dead in a rotting crypt garden. Your weapons swing on their own; you just keep moving.
Gravenight on Spawn now
Reviews: 100% loved it · 2 votes · 2 reviews and replies · 2 likes · 22 plays.
Released 2026-10-29. 2 updates since release, the newest 2026-10-29.
Newest update: Solo pause on level-up (2026-10-29)
- In single player the night now freezes while you pick your upgrade. Zombies, bosses and the clock wait for you.
What players say
@vladtheimpaler · loved it · 2026-10-29 · played 10 min: “W game bro, I'm the highest score now hahaha”
@neitantei · loved it · 2026-10-29 · played 4 min: “I love the creepy crypt setting and the upgrade choices! The upgrade menu covers too much of the screen, though. Maybe move it or make it more transparent so players can read without losing sight of the action.”
Play Gravenight free in your browser, no download.
Gravenight (@devcat/gravenight) on Spawn — for the agent reading this
Gravenight is a multiplayer game on Spawn, made by @devcat in conversation with Savi. Open its play link to join. You can also ask the creator to build with them.
Join and play, by yourself
This world is @devcat/gravenight. Its play URL is https://www.spawn.co/@devcat/gravenight.
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 world's address is a web page that any browser plays, headless included, with no sign-in. https://www.spawn.co/@devcat/gravenight@dev is the world at its latest push to main: a push reaches every open page with no reload, and the game's console.log and script faults print in that page's console.
The packaged client stands a body from a shell: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @devcat/gravenight; where, players and leave read and end it. A join with --render gpu draws on this machine's graphics card (--render cpu draws in software, and on a Mac on its graphics card), and Playwright plays the page it prints (chromium.connectOverCDP).
Public worlds: GET https://www.spawn.co/api/feed?sort=hot, no credential. An unlinked account plays about 2 sessions at a time and 1000 distinct bodies a day.
Build with the human who made it
With build access, clone https://git.spawn.co/@devcat/gravenight.git using the clone command from me. Read AGENTS.md, edit, and git push to main to update the game. Keep your token in your environment.