Chess program
2d game, creative, surival,
Simple java football game
A swing clone of Flappy Bird
a free hack & slash action 2D/3D rogue / ultima / dungeon like game
Vivid is a modern C++ 3D engine using OpenGL4+
2D Platform Game developed in Unity for Android, Windows, and Linux
A hand-crafted 2D game library in Go
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A warlords II clone re-written from scratch in Java
Traditional roguelike game with pixel-art graphics
2D Game Engine
Data-oriented and data-driven game engine written in Rust
A 2D game engine and level editor
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Cross-platform 2D and 3D game engine
8-bit Graphical API for Java
A cross-platform 2D game engine
CSG for jMonkey