Asphyre is a cross-platform framework for Delphi and FreePascal.
JavaScript framework to build game engines, games, emulators and apps
3D .NET engine for Windows, Linux, Mac
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Orx: Portable Game Engine
Old-school 2D game engine
Java Settlers
INSTEAD - Simple Text Adventure Interpreter.
SDK for Resident Evil Games
A complete web framework to create online Fighting Fantasy adventures
German Extension for Inform 7
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
Portable game engine with main focus on point-and-click adventures