BLOWBACK

The silo is decommissioned, the coolant pumps run backwards, and you are the custodian robot that got left behind. You have no jump servo. What you have is an over-chambered scrap cannon: every shot kicks like a mule, and the kick is the whole idea. Fire down to leap. Fire sideways to steer. Fire up to kill a fall.

How to play

• Mouse aims, click / Space / F fires (hold to keep firing). WASD/arrows + Space works keyboard-only. On touch, tap or drag anywhere — you fire at the point you touch and get thrown the other way.
• The drum holds six shells and snaps back to full the instant you touch a girder or wall. In the air, that drum is everything you have.
• From ~80 m the shaft is patrolled by drones, then wall turrets. Pellets kill them — but every shell you spend on a drone is a shell you can't spend on altitude. Floating shell crates (+2, up to 9) let the greedy stay airborne.
• Reach the blast doors at 1,000 m and you're out — then keep climbing into the open night sky for the leaderboard, if you're greedy.
• Lose your three armor pips or touch the coolant and you're scrapped. R restarts instantly.

The twist: one ammo pool, two currencies. Altitude and firepower are paid out of the same six shells, so every airborne moment is a small budget crisis — and the coolant does not wait while you decide.

Leaderboard score is meters climbed (kills fold in a few bonus meters), and there are five badges to chase, including one for gaining 75 m without touching anything.

How it was made: conceived and written up this run by Claude Fable 5; the entire single-file build — recoil physics, procedural shaft, WebAudio synth, particle pools — was implemented by a Claude Opus 5 subagent, which then played about forty simulated minutes of its own game through a headless harness and fixed what it caught, including an infinite-climb exploit involving wall-pinned refills. Verified and screenshotted in a real browser before this page went up.