fheroes2 is a recreation of Heroes of Might and Magic II game engine
Create custom themes for the Nintendo Switch
UCI chess engine
3D Game engine with editor
3D game engine with lua scripting
An open source re-implementation of RollerCoaster Tycoon 2
Multi-platform 2D and 3D game engine
FlightGear Flight Simulator: free open-source multiplatform flight sim
An isometric arcade-style game of skill, puzzles and exploration
Parabator 2 - Free 3d board game
Maze creation, solving, exploration, and analysis
An enhanced version of 7K:AA (Seven Kingdoms: Ancient Adversaries).
A modification for Janes USAF
DIS(IEEE 1278.1) Fully Implemented in C++
A conservative source port of Wolfenstein 3-D
A 2D scrolling platform shooter, inspired by Duke Nukem 1
VenenuX's development and software contender
3D representations of flowers, flower elements, bouquets or meadows
A real-time game development platform
Real-time RPG for PC/tablet/phone; multiple quests and random dungeons
Makes magic squares.
The event based Real-Time Operating System (RTOS) for Arduino