Alternatives to OpenMW

Open-source engine for Heroes of Might & Magic III

Real-time strategy game engine for Westwood games

2D and 3D game engine

C# scripting capable version of Godot game engine

Client for Old School RuneScape

Run classic graphical adventure and role-playing games

Frontend for emulators, game engines and media players (OpenGL graphics API)

Open-source transport simulation game

Open-source, cross-platform game engine designed to be used by everyone

Voxel game-creation platform

Download and manage your addons and mods

First person shooter engine