Equilibrium 3D is 3D Arkanoid clone mixed with FPS puzzle/platformer. The unique aspect of the game is that some of the bricks can't be destroyed with the ball - they have to be detonated from inside. This is where the FPS part starts. When you are inside a brick you have to spawn cubes with your special plasma gun and climb all the way up to the detonator.
Note: Finder and MacUpdate Desktop report version 4.6.1f1, which is the version of the game's Unity runtime engine. The developer refers to this version as 1.0.