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FrogJump

A free platformer game — play it in your browser, no install. 2D Java platformer: collect apples, avoid spikes. Playable in the browser.

by @gabbogs · gabbogs/FrogJump on GitHubLANG JavaHOSTED ON GABBOGS.GITHUB.IOUPDATED 22 Oct 2026

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Controls: Enter or click Play to start · A / D to move left / right · W / Space to jump

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From the README

A 2D platformer built in Java (Swing). Collect every apple, avoid the spikes, and climb to the top of each level.

On the desktop: open the project in Eclipse (or any Java IDE) with src and res as source folders, then run main.MainClass. Java 8 or newer. Add --perf to print updates and frames per second.

In the browser: docs/ holds a JavaScript port of the game (docs/game.js) that GitHub Pages serves. It uses the same art, levels, physics numbers and rules as the Java code, drawn on an HTML canvas that fills the window.

Read the full README on GitHub →

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