Postal1
https://bitbucket.org/gopostal/postal-1-open-source/src

Destination Sol
https://github.com/MovingBlocks/DestinationSol

Blackvoxel
http://www.blackvoxel.com/

Valyria Tear
https://github.com/ValyriaTear/ValyriaTear

Hexoshi - metroid clone
https://github.com/ValyriaTear/ValyriaTear