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Reliz Engine —a tiny game engine in Rust
A tiny 2D game engine written in Rust (5MB build, 50MB RAM)
A small Godot-Lite 2D game engine written in Rust. Scene tree, components, AABB physics, input, audio, and an egui editor. ~5 MB on disk, ~45-50 MB RAM at runtime.
Hey Product Hunt!
I started this project a few weeks ago for a simple reason: I wanted to peel back the layers of modern game engines and see exactly how they work under the hood. What started as a small experiment with Rust and pixels quickly grew into a functioning 2D engine with its own egui editor, custom physics, and a JSON scene saver.
The biggest surprise for me was how lightweight it stayed. In a world where empty project builds can take up hundreds of megabytes, this entire thing sits at a 5 MB build size and sips around 45–50 MB of RAM while running.
What’s next on my radar (open to your feedback here!):
Implementing a proper batch renderer for thousands of sprites.
Adding hot-reloading for assets and scripts so you don't have to restart the editor.
This is purely a learning, open-source project, I'm not trying to dethrone Godot or Bevy. I just genuinely enjoy watching a living system come together from small, clean pieces of code.
The project is completely open. I would absolutely love to hear your thoughts, feedback, or what features you’d love to see in a hyper-lightweight engine like this.
Check out the code, and if you like what you see, happy to get your stars on GitHub!
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About Reliz Engine —a tiny game engine in Rust on Product Hunt
“A tiny 2D game engine written in Rust (5MB build, 50MB RAM)”
Reliz Engine —a tiny game engine in Rust was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #94 on the daily leaderboard. A small Godot-Lite 2D game engine written in Rust. Scene tree, components, AABB physics, input, audio, and an egui editor. ~5 MB on disk, ~45-50 MB RAM at runtime.
Reliz Engine —a tiny game engine in Rust was featured in Open Source (68.6k followers), Developer Tools (515.4k followers), GitHub (41.3k followers) and Games (98.7k followers) on Product Hunt. Together, these topics include over 138.6k products, making this a competitive space to launch in.
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