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Journey – A Custom 2D ECS Game Engine Written in Rust and WGPU
by ujjwalvivek·Feb 16, 2026·10 points·4 comments
AI Analysis
●●SolidWizardryBig Brain
ECS in Rust + WGPU avoids borrow-checker pain, but Bevy already does this better.
Strengths
- •Custom System Runner solves Rust's circular-reference problem via columnar data layout; zero runtime safety overhead
- •Data-oriented ECS design (contiguous memory, CPU cache prefetching) is genuinely clever for game performance
- •Live WASM demo + 44 open-sourced C# scripts from multiplayer FPS show breadth of game knowledge
Weaknesses
- •Bevy (mature, well-funded Rust game engine) already solved ECS + WGPU + safety; reinvention here is educational, not differentiating
- •WebAssembly gaming is a known category; browser 2D games don't need custom engines to ship
Category
Target Audience
Game developers interested in engine architecture, Rust systems programming learners
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Bevy · Fyrox · Amethyst
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