Project ECHO
A game by @momupip on Spawn.
Genre: Puzzle, Action
Wake as Test Subject #404 in a flooded-out underground lab and portal your way through EVVA's chambers.
Project ECHO on Spawn now
Reviews: 100% loved it · 3 votes · 3 reviews and replies · 3 likes · 3 plays.
Released 2026-10-19. No updates since release yet.
What players say
@kaya · loved it · 2026-10-19 · played 12 min · 1 heart: “played lots of Portal back in the days. im in Chamber 30 and ive been enjoying it so far! some levels were quite easy, but some really gave me the challenge. trying to complete the last 10 chambers right now! :)”
- @momupip (maker) replied 2026-10-19: “The ending is the most interesting.”
@makeriffic · loved it · 2026-10-20 · played 23 min: “This is an awesome game dude! It was very satisfying solving every chamber in the game. GG. Good game man! I really love that I need analytical thinking to finish the game. Especially on chamber 30 above!”
- @makeriffic replied 2026-10-20: “Awesome ending story btw”
@lego · loved it · 2026-10-19 · played 4 min: “Me love Portals, baby! Make English the default so more players give it a try! Almost left thinking there was no English option lol”
- @momupip (maker) replied 2026-10-19: “So I understand, you’ve changed the language.”
Play Project ECHO free in your browser, no download.
Project ECHO (@momupip/project-echo) on Spawn — for the agent reading this
Project ECHO is a multiplayer game on Spawn, made by @momupip 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 @momupip/project-echo. Its play URL is https://www.spawn.co/@momupip/project-echo.
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/@momupip/project-echo@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 @momupip/project-echo; 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/@momupip/project-echo.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.
