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rainbow guardian

A free browser game — play it in your browser, no install. Game made for JS13K. GitHub is under attack from waves of incming slop. You, an angry unicorn, must keep the reactor core alive. Maintain the double-rainbow shields and take out slop with your slop cannon.

by @leereilly · leereilly/rainbow-guardian on GitHubLANG JavaScriptHOSTED ON JS13KGAMES.COMUPDATED 13 Sep 2026

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Controls: SPACE / click / tap: start the game, and during play, reverse the horn's orbit…

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From the README

Created for js13kGames competition. Theme: Rainbows and Unicorns. Constraint: web only, <= 13KB.

GitHub is under attack from waves of incming slop. You, an angry unicorn, must keep the reactor core alive. Maintain the double-rainbow shields and take out slop with your slop cannon.

its guard toward whichever half is under threat.

directly. A brief input lock after each screen change prevents accidental picks and reversals.

Two independent halves (right and left) each start at 100 HP. A blob that reaches a living half peels its outer colour bands and pops.

Read the full README on GitHub →

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