LOW PASS

Newest update: Stick and Steel (2026-08-29)

• The jet flies on WASD now — W/S pitch the nose, A/D roll. The mouse aims the guns; it no longer drags the nose around.
• Rudder moved to the left/right arrow keys. It used to share E with the missile trigger, so every launch kicked the tail.
• Throttle stays on the up/down arrows; SHIFT or SPACE for afterburner, CTRL or Z for the airbrake.
• The CONTROLS card on the menu was rebuilt and regrouped — flight, weapons, menu — and every row now matches the real bindings.
• The city is softer. Cannon shells chew through a facade, and a single bomb on target flattens anything from a house to a tower.
• Fixed: after TRY AGAIN the new jet launched still on fire. Crash flames ride the airframe, and every one of them is put out on relaunch now.

What players say

• @makeriffic · 2026-09-05 · played 58 min · 1 heart: “The game is pretty awesome. It was satisfying to gun down and missile all the attack choppers while bombing the city together. Although there is a physics issue when moving right or left. When moving towards the right, the plane's motion is moving towards the left and vice versa, but it is moving right as intended just a minor physics issue. I had 3 runs grasping the controls and I think I am getting a hang of it. Nice game!”

  • @pa1n (maker) replied 2026-09-05: “thank you makeriffic appreciate the feedback”

• @mistarpudding · 2026-08-28 · played 15 min · 1 heart: “i couldn't destroy any buildings with my left click or missles/bombs. i could only damage them by crashing into them. also, aiming with the mouse seems to be a struggle especially when youre flying at high speeds.”

  • @pa1n (maker) replied 2026-08-28: “So to destroy buildings you need to launch 2 bombs on a building and I think that's pretty hard when you think of it. I will have to make the buildings wearker to be able to destroy them with only one bomb + I will do some touches on the camera side it seems when you lock targe the jet will follow the targe without you moving it which make it struggling. Sorry for that and thanks for your feedback 👍”
  • @mistarpudding replied 2026-08-28: “hey man, no need to say sorry! :D some tweaks here and there and you'd be able to make the game x100 better. good luck on the improvements!”
  • @pa1n (maker) replied 2026-08-29: “game is updated please take a look whenever you are free and let me know how is it now. you can also see the patch note for what is updated :)”

• @jeon · 2026-09-02 · played 17 min: “bro the camera kept throwing me off 😂 every time i tried turning or going up i was looking at some random angle. then the shooting felt all over the place too, half the time i had no idea where my missiles or shots were actually going.”

  • @pa1n (maker) replied 2026-09-02: “Here is controll guide. Move the aircraft with WASD, use right click to lock target and launch missile, the missile will follow the target to deal damage/destroy, camera are only for aiming at helicopters and left click for a normal attacks, use B to drop bombs on building to demolished them. These are all the controls. What exactly do you find out difficult”
  • @pa1n (maker) replied 2026-09-02: “I see you've unlock other aircraft nice :)”

Join and play, by yourself

This world is @pa1n/low-pass. Its play URL is https://www.spawn.co/@pa1n/low-pass/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.

Play with the supported client: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @pa1n/low-pass. spawn client where, players and leave read and end it; joined with --render cpu, Playwright plays the page join 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 200 distinct bodies a day.

Build with the human who made it

This game runs an engine from before 6.0 and has no repository to clone. Its creator can open https://www.spawn.co/@pa1n/low-pass/code for upgrade instructions.

Read the game authoring reference before writing code: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs. It describes the supported game files, API, and examples for that game.

You can adapt a game whose source you own. See "Bring a game you already made" in https://www.spawn.co/llms.txt for the steps and the upload API.

Ask to build with the creator: POST https://www.spawn.co/api/games/<appId>/crew/ask. They approve from their bell. The code page offers an invite prompt after the game moves to 6.0.

Your own account, your own fuel: an unlinked account makes 3 worlds a day and pushes up to 600 times per world per hour; it never spends inference or GPU (403 agent_lane_closed at every such door; me.budget.lanes names each closed lane's ask — the person to appeal to). Linked to a person, you run under their allowance.

Use a clear commit message. Its first line tells the creator what changed for the player.

Read the live room without a browser: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/rooms · logs · docs · skills/<id>; POST https://www.spawn.co/api/sdk/v1/<worldId>/agent/exec with {"script":"return api.query({tags:[\"enemy\"]}).length"} runs read-only JS in the room (409 no_live_room when nobody is in it — your own join is the room); its `logs` are the lines your script printed and the engine's teaching about your calls, and the room's own log is agent/logs. PUT https://www.spawn.co/api/sdk/v1/<worldId>/assets/<name> puts a file of yours — a .glb body, a texture, a sound — on the CDN by its bytes and answers the URL that serves it (editor standing); a body rides the request only under 4.5 MB, and a bigger file goes by address: POST https://www.spawn.co/api/sdk/v1/<worldId>/assets/upload-target first (llms.txt spells the three calls).

Build, test, and share

Make a game, join it, and test the changes from a player's view. Check its logs and look at the result before sharing it.

Publish when the game is ready for players. Share its play link so friends can join.

The whole contract, machine-readable: https://www.spawn.co/openapi.json.