fheroes2 is a recreation of Heroes of Might and Magic II game engine
A simple and easy-to-use library to enjoy videogames programming
Multiplatform MIDI File Player for Linux, Windows, and macOS
Magic Another Game Engine
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
FlightGear Flight Simulator: free open-source multiplatform flight sim
A multiplatform Flight Simulator
Game library for Pascal
Retro style, multi-platform soccer game
Cross-platform dice roller for multiple RPG systems.
GEDKeeper - opensource and crossplatform genealogy management program
General Purpose Engine for Graphic Adventures.
Java application for creating Morphing videos
a multiplatform, full-featured GameBoy classic emulator
Multiplatform karaoke player
Multiplatform Multiemulator Frontend
Just another Tetris™ clone
Just another Snake clone
A snarky 2D management game about building and running a dungeon.
GGMud is a cross platform modern MUD client.
Desktop application with a tombola-like spinning label.
extremely simple and low-fi multiplatform strategy game
An open-source MasterMind clone