Comfy is a fun 2D game engine built in Rust. It's designed to be opinionated, productive, and easy to use. Inspired by macroquad, raylib, Love2D and many others, it is designed to just work and fill most of the common use cases.
A Zig game engine & graphics toolkit, for building high-performance, truly cross-platform, robust & modular games, visualizations, and desktop/mobile GUI apps
Oxygengine is an all-batteries-included kind of engine, focused on being Web-first but slowly moving more into more platforms such as desktops and consoles
Chickadee is a game development toolkit for Guile Scheme, providing all the essential tools that parenthetically inclined game developers need to make games in Scheme.