Three.js vs Unreal Engine

Topic	Three.js	Unreal Engine
Languages	JavaScript, TypeScript	C++, Blueprints
Platforms	Web	Windows, macOS, Linux, Android, iOS, Consoles
2D / 3D	3D	3D
License	MIT	Source-available
Learning curve (1–5)	3	5

Three.js

The WebGL/WebGPU library most 3D sites are built on. You assemble rendering, input, and gameplay yourself.

Bullet-hell shooter rendered with Three.js.

shooterintermediateGitHub

3D tower defense on Three.js.

strategyintermediateGitHub

High-fidelity 3D, Nanite, Lumen, and Blueprints. Best when visuals and a larger project matter more than a tiny download.

Tom Looman’s Unreal 5 action-roguelike course project.

roguelikeadvancedGitHub

Survival shooter series: inventory, AI, and replication.

shooteradvancedGitHub