GarageEngine: 2d game engine written in Go working on OpenGL. Its an Entity/Component based engine and contains lots of features such as: Font, Sprites, Texture packing, Physics, Depth layers, Scenes and more. It feels like Unity3d and share the same names: Scene, Coroutines, Components, Transform, GameObjects etc...
Glop (Game Library Of Power) is a fairly simple cross-platform game library.
The [A\* pathfinding algorithm] is a pathfinding algorithm noted for its performance and accuracy and is commonly used in game development. It can be used to find short paths for any weighted graph. A fantastic overview of A\* can be found at [Amit Patel's Stanford website]
go3d is a performance oriented vector and matrix math package for 2D and 3D graphics.
SpaceInvaders written in GO https://github.com/sausheong/invaders
This is a console-based version of Tetris written in Go https://github.com/jjinux/gotetris
NES emulator written in Go. https://github.com/fogleman/nes