Back into Orbit is a fun shooter game in X Window, said a simple isometric shooter roguelike.
You shoot some black robots and green device which generates some kind of wave harming your health if you stay within the range. There is also different colors of cones that transport you to different locations. Some are really bad as you are ambushed.
Enemies and devices might drop coins, which might be used in a shop area. Never lived that long to try. The bigger robots shoot.
Back into Orbit was created on 2015-06-11, written in C with SDL2, GLEW, OpenGL 2.0+, and Assimp (Open Asset Import Library) under GPLv2, running on Linux and Windows, currently git-dc03083 (2016-01-21).