engine3d topic
go-ngine
[2013, incomplete] the goal back then: "a Go-native, modern-OpenGL real-time 3D rendering engine" ➜ I think it's still a solid *basis* for one; the real "meat" is in `___old2013` ➜ project stalled out...
goluwa
game engine and framework written in luajit
KlayGE
KlayGE is a cross-platform open source game engine with plugin-based architecture.
TinyEngine
Tiny OpenGL Wrapper / 3D Engine in C++
Razix
High Performance Game Engine for Production Pipeline
StarRuler2-Source
4X Space Strategy game Star Ruler 2's open source distribution.
BabylonCpp
A port of Babylon.js to C++
NeoAxisEngine
A versatile real-time platform for making 3D, 2D games and apps.
gloomy-dungeons-2
Gloomy Dungeons II - a continuation of old-school 3d-shooter.
gloomy-dungeons-3d
Old-school 3D shooter for android. Wolf-like engine, but *not* raycasting.