Game Engine in Julia with 400KB Exports (Vs Unity's 200MB)
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Hi HN! Built a code-first game engine called OpenReality. No visual editor - you write games in pure code. features: - Pure code workflow - 400KB WASM exports (Unity: 200MB+) - Free and open source - full 3D rendering - multiple rendering backendsgithub: https://github.com/sinisterMage/Open-Reality Happy to answer questions about the tech or implementation!
HN · launched Feb 17, 2026 · 5 upvotes (top 89%) · 0 views
Niche: game development engines · 85 launches, 1 in the last 7 days ▼ -86% · Explore this niche →
Category and tags
- Media & entertainment
- Dev tools
- Developer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 85 launches in game development engines →
Could you build this?
No Authoring an original 3D game engine in Julia capable of producing 400KB WebAssembly exports requires advanced graphics programming, custom engine architecture, and solving Julia's substantial runtime/WASM compiler bloat.
What it would actually take: Julia traditionally compiles with a heavy multi-megabyte runtime, so achieving a 400KB WASM bundle necessitates a custom minimal compiler target, static compilation pipeline (like StaticCompiler.jl), or custom C/WASM bridging. The engine itself requires writing a custom 3D renderer (WebGPU/WebGL), math libraries, scenegraph, memory allocators, and asset loaders without relying on the heavy standard library. This demands world-class Julia compiler internals knowledge and low-level graphics engineering.
Discussion
2 comments analyzed.
Feature requests: Add images of example renders to documentation
Competitors
Other products that read as similar to this one : 252 launches clear the similarity bar, closest 8 shown.
Attention rank: #239 of 253 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 83 days after the earliest competitor.
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