Build it in our Java Studio too: lay out your game, add real Java methods and export a runnable Swing project in the browser, with no install. Open the Java Mod Studio →
How to run: Write Java code in each step. The canvas on the right shows what your code does - a live preview that maps Java concepts to a visual game.
Lumo says: every step adds one feature to the same game. Type a little, click Apply to Canvas, and test it straight away. There is no wrong answer you can't undo.
Starter reference project: want to compare against a finished version or recover from a mistake? Download the complete code for every step: java-platformer-workshop-reference.zip.
Build Java Platformer Step by Step
Each step adds a feature. Write the code, watch it come alive in the canvas.
Step 1 / 6
Your player falls with gravity and lands on the ground