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Dev tools · October 18, 2026

BS

Bullet Script (bs) – a Lisp(y) VM for shmup bullet patterns

Live-code bullet patterns in bs. The game runs behind the editor and updates as you evaluate.

Bullet Script (bs) – a Lisp(y) VM for shmup bullet patterns launched on October 18, 2026 with 6 votes, #636 of 3,081 launches that month and more than 75% of that year's launches.

Visit bs.ell.dev ↗Alternativestop 21% of October 2026

What it does

Scripts read these with (input 'var1 default) . Unset vars use the default. How many paths it keeps each tick and how far ahead it looks for bullets. More finds more, slower. Any symbol works as a kind. Unknown ones draw as 'bullet ; 'emitter draws nothing. Click tofrom bs.ell.dev

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