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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!
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.
On the analytics side, Reliz Engine —a tiny game engine in Rust competes within Open Source, Developer Tools, GitHub and Games — topics that collectively have 724k followers on Product Hunt. The dashboard above tracks how Reliz Engine —a tiny game engine in Rust performed against the three products that launched closest to it on the same day.
Who hunted Reliz Engine —a tiny game engine in Rust?
Reliz Engine —a tiny game engine in Rust was hunted by reliz. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Reliz Engine —a tiny game engine in Rust including community comment highlights and product details, visit the product overview.
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