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mathslayer

A free math game — play it in your browser, no install. MathSlayer: an anime-style browser math game built with Phaser.js. Solve arithmetic problems to defeat slimes before they reach you — practice addition, subtraction, multiplication and division.

by @holmgren23 · holmgren23/mathslayer on GitHubLANG JavaScriptHOSTED ON HOLMGREN23.GITHUB.IOUPDATED 1 Oct 2026

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Controls: Select operations to practice — Addition, Subtraction, Multiplication…

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From the README

An anime-style browser math game built with Phaser.js. Defeat slime enemies by solving math problems before they reach your character!

All thresholds are tunable in src/config.js via the CONFIG object.

Placeholder colored sprites are generated procedurally. To use real artwork, add PNG files to the sprites/ folder and update SpriteManager.preload() in src/SpriteManager.js to load them.

For animated spritesheets, use scene.load.spritesheet() and add animation configs — all other game code remains unchanged.

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Read the full README on GitHub →

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