Game Engine in Julia with 400KB Exports (Vs Unity's 200MB)
Details
- External ID
- 47044785
- Source
- HN
- Company
- —
- Product
- Game Engine in Julia with 400KB Exports (Vs Unity's 200MB)
- Website domain
- github.com
- Launched
- Feb. 17, 2026
- Cohort
- —
- Upvotes
- 5
- Upvotes percentile
- 0.10512129380053908
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
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!
Enrichment
- Theme
- interactive simulations and creative experiments
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- lightweight game engine in julia
- Manually corrected
- False
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 — 91 launches clear the similarity bar, closest 8 shown.
Attention rank: #87 of 92 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 83 days after the earliest competitor.
- My biggest solo-project: Game engine with its own programming language · hn · 2026-05-25 · 5 upvotes · similarity 0.50
- I open-sourced my Steam game, 100% written in Lua, engine is also open · hn · 2026-03-06 · 65 upvotes · similarity 0.47
- I vibe-coded a custom WebGPU engine for my MMO · hn · 2026-02-23 · 5 upvotes · similarity 0.42
- Horizon Engine · hn · 2026-01-10 · 5 upvotes · similarity 0.42
- 2D RPG base game client recreated in modern HTML5 game engine with AI · hn · 2026-03-10 · 11 upvotes · similarity 0.40
- OpenBattlefield2 · github · 2026-09-09 · 8 upvotes · similarity 0.40
- Hedra · hn · 2026-03-14 · 11 upvotes · similarity 0.39
- Zephyr3D · hn · 2025-11-26 · 9 upvotes · similarity 0.39
Other launches for this product
- No other launches for this product.
Same idea, different domain
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