Invention 6 is a 3D first-person shooter with Scrollshooter elements. The events unfold immediately after the end of the previous part of the game. Dorian shot down Casey's plane and took his revenge. It would seem that the main villain is defeated. However, this time the player will have to play as Casey Jefferson herself! The girl survived the plane crash and faced trouble: someone named Frederick captured her company and sent robots to kill her. Having tried to call for help, she managed to contact only her enemy - Dorian, who himself would not mind sending the girl to the depths of hell. So what? Will the former enemies be able to unite and fight the new evil - Frederick? Invention 6 is a 3D shooter with Scrollshooter elements, as well as a small share of logical puzzles that must be solved to complete the level. Learn the story of Casey and Dorian, shoot robots and zombies, and fight powerful bosses to the fiery Heavy Metal.