Combat Racer 

Combat Racer is a gravcar combat racing simulator for Windows. Combat Racer puts you in the pilot's seat of a grav car in a variety of races. It also features vehicle design.
combat racer rockland game racing sim shooter fps

GravOtron 

GravOtron is a Puzzle game where the player controls the pull of gravity. While having control over the directional pull of gravity, the player must navigate 4 Orbs to each other until all 4 Orbs are one; doing so before their time or turns run out.
demo game puzzle 3d gravotron gravity o tron orb orbs time timed turn