Unity - The multiplatform game creation tools for everyone.
Cycles Renderer - Cycles is Blender’s ray-trace based production render engine and in development since 2011.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
POV-Ray - What was then called STAR-Light, and later renamed to PV-Ray and ultimately POV-Ray, has therefore been on this planet for a whopping 9, 190 (or 11, 000) revolutions by now (plus another guesstimated 150 above it).
GDevelop - GDevelop is an open-source game making software designed to be used by everyone.