December 9, 2025
FPS flex vs. reality check
Kaiju – General purpose 3D/2D game engine in Go and Vulkan with built in editor
Go-made game engine boasts speed; commenters ask: where are the games
TLDR: Kaiju is a new Go-powered game engine boasting huge speed gains and fresh Android support, but commenters demand real game demos and Mac answers. The big debate: impressive benchmarks vs. proof of fun, with a side fight about garbage collection that most agree isn’t a dealbreaker.
Kaiju, a new game engine built in Go and running on Vulkan, just rolled in claiming wild speed — the dev says it’s “9x faster than Unity” and already runs on Windows, Linux, and now Android, with Mac still in the shop. There’s even talk of local AI tools and lean memory use. But the crowd’s reaction? Equal parts hype and side-eye. One top comment simply snarked, “Vibe coded?” while another pressed the obvious: what’s blocking Mac — is it Vulkan? The speed flex got attention, but so did the “work in progress” label on the editor and that bold FPS chest-thump.
The real brawl broke out over proof. Commenters want actual, playable games and clear demos the way Unity does. “It’s always easier to make an engine than a game,” one veteran sighed, while another said they found “one single screenshot” after digging through kaijuengine.org. Meanwhile, a separate thread cooled off the “garbage collector” panic: fans pointed out Unity, Godot, and even Unreal manage memory automatically too — it’s not poison, it’s normal. Bottom line: devs love the promise of Go’s simplicity and the raw FPS boasts, but the crowd’s chanting the classic internet ritual: screenshots or it didn’t happen.
Key Points
- •Kaiju is a 2D/3D game engine written in Go and backed by Vulkan, with a focus on simplicity and performance.
- •Current platform support includes Windows, Linux, and Android (functional), with macOS support in progress.
- •The engine claims faster builds, lower memory usage, and significantly higher FPS than Unity in author-run tests.
- •Go’s garbage collector is used and described as compatible with the engine’s design, with previously measured net-zero heap allocation.
- •The engine is production ready, but the built-in editor is still a work in progress; documentation and community channels are available.