Developer Rebuilds Minecraft From Triangular Prisms: PrismCraft Is Now Playable in Your Browser

French developer and blogger LAirHisson has unveiled PrismCraft, an experimental voxel sandbox. Its key difference from the classic Minecraft formula is a complete rejection of cubes in favor of triangular prisms with equilateral triangle bases.

The author has been playing the original for over a decade and wanted to see how building and world generation logic would change if the base geometry were rebuilt from scratch. The project is written in JavaScript using the Three.js 3D library.

A Triangular World With Its Own Physics

Swapping the cubic grid for a triangular one required unconventional technical solutions. As AUTOMATON notes, the author had to recalculate character collisions, prism alignment algorithms for rotations, and procedural terrain generation, with help from the AI assistant Claude.

The current version of PrismCraft already includes all the core mechanics:

• mining and placing triangular blocks aligned to a guide grid;
• generation of hills, caves, and bodies of water;
• an inventory system and crafting recipes;
• switching between survival and free-build modes;
• a stylized interface and a triangular third-person character model.

The new geometry allows for smooth diagonal walls, sharp corners, and complex architectural shapes that are impossible to build with standard cubes without mods.

J'en avait marre des cubes du coup j'ai refait Minecraft avec des triangles (enfin des prismes on se comprend) pic.twitter.com/dhBz9UfRAp

— LAirHisson 🦔 (@lairhisson) September 1, 2026

Where to Try the Project

A working prototype of version 0.3 is available on itch.io. The sandbox runs directly in your browser, and the installer archive weighs just 246 kilobytes.

The author stresses that the game was created solely for research purposes for his YouTube channel, uses no Mojang assets, and is in no way affiliated with Microsoft.