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afterglow

A free platformer game — play it in your browser, no install. Afterglow: a puzzle platformer where your past runs become echoes that change the map.

by @cubicobelus · cubicobelus/afterglow on GitHubLANG JavaScriptHOSTED ON CUBICOBELUS.GITHUB.IOUPDATED 18 Oct 2026

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Controls: Move: arrow keys or A and D · Jump: space, Up or W · Record, stop: e

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From the README

A puzzle platformer in your browser. You are a wick-spirit climbing a drowned lighthouse to relight its lamp, and the only help you have is your own past: record a run, and it comes back as an echo that replays your path and then holds the spot where you stopped. Echoes press plates, carry light, melt crystal and bend gravity. Plain HTML and JavaScript on a canvas, no build step, no dependencies. Every picture and sound is drawn or synthesized in code.

▶ Play in your browser: nothing to download or install.

Press E to start recording and E again to stop.

Read the full README on GitHub →

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