3D Engine c++
Orx: Data-Driven Game Engine
General Purpose Engine for Graphic Adventures.
Tools and Z80 engine for creating adventure games. (RUST)
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Low-Level Game Engine for Retro Platforms
Cross-platform reimplementation of AMOS BASIC (runtime)
Runtime graphic engine (use OpenGL) for ObjectPascal