Orx: Portable Game Engine
A cross-platform port of Hexen II game.
inputbox password WIN OSX GTK QT Console VCPKG C# Lua R Fortran Pascal
Multi-platform game engine similar to old Megaman with a stage editor
Open Game Bootstrap
A generic 2D engine for any kind of game
code of the book "Introduction to Computer Graphics..
A Simple Game Engine
This game is a 2d arcade game. You can move, jump, kill monster.
Reference implementation for the Doom game engine.