HypeHype - A mobile app to create, remix and play games. See this X post.
Light Tracer Render - A rendering tool, uses Jolt for object placement. See this announcement.
LÖVR - A Lua VR framework. See this release announcement.
luxe engine - A cross platform, rapid development game engine.
The Mirror - A game development platform designed to empower developers and artists with real-time, limitless creativity. See this X post.
Nazara Engine - A cross-platform framework aimed at real-time applications (such as video games) requiring Audio, 2D/3D rendering and physics, network and more.