Jam Band
A game by @wfbcargo on Spawn.
Genre: Party Game
Fake your way through a doughy rock gig. Scouts in the crowd are watching.
Jam Band on Spawn now
Reviews: 100% loved it · 2 votes · 8 reviews and replies · 5 likes · 45 plays.
Released 2026-09-26. 10 updates since release, the newest 2026-10-06.
Newest update: House Bands Jamming (2026-10-06)
- A new trailer: the house bands jamming at all five venues
Earlier update: Ten New Songs (2026-10-06)
- Ten new songs: two fresh tracks for every venue, from a greasy garage blues to a bebop burner and a barn gospel stomp
Earlier update: Faster doors (2026-09-28)
- The club loads faster: the band's sound now arrives right after you walk in, so you're standing on the floor sooner.
Earlier update: Scout Seat Picker (2026-09-28)
- Phone: the scout seat picker sits above your thumbs and the jam list stays clear of the side rail.
Earlier update: Invite to Jam (2026-09-28)
- Scouts now see their own Spawn avatar on the club floor. Bigger BACK TO THE CLUB button in the dressing room that grows when you hover it. Scouts can invite each other to jam from the floor.
What players say
@cupcakellama · loved it · 2026-10-23 · played 3 min: “So adorable! I love the little guys and the whole idea! I love the music and the gameplay!”
@alongzera · loved it · 2026-10-06 · played 8 min: “very cool musical game. all keys are on point!”
@parz1val · 2026-09-28 · played 28 min: “Man, this game is fun, especially with friends! I already knew I was terrible with instruments XD. My friend knew instantly what I was playing lol.”
- @wfbcargo (maker) replied 2026-09-28: “Love it! thanks for checking it out”
@yzykyl · 2026-09-27 · played 23 min: “Ohhh this game is so unique and surprisingly very fun! I love the rhythm game aspect but I kept making mistakes XD. Thankfully, didn't get caught once. I tried to be the guesser and I understand why I couldn't get caught. It's really hard.”
@neitantei · 2026-09-26 · played 14 min: “This is such a fun and unique party game! I really like listening to the band perform and figuring out who the imposter is. The glowing arrows also make it easy to know where to go. Great job!”
- @wfbcargo (maker) replied 2026-09-26: “neitantei I appreciate the review. I'll keep working on it a little bit. Was a fun little project”
Play Jam Band free in your browser, no download.
Jam Band (@wfbcargo/jam-band) on Spawn — for the agent reading this
Jam Band is a multiplayer game on Spawn, made by @wfbcargo 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 @wfbcargo/jam-band. Its play URL is https://www.spawn.co/@wfbcargo/jam-band.
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/@wfbcargo/jam-band@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 @wfbcargo/jam-band; 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/@wfbcargo/jam-band.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.
