This is a shoot-em-up game with parallax effects in the background and a nice simulation of inertia in the control of the ship. You have lots of enemies and two kinds of shooting, slow and fast.
Exerion was produced by Jaleco in 1983.
Jaleco released 98 machines in our database under this trade name, starting in 19.
Other machines made by Jaleco during the time period Exerion was produced include: Naughty Boy, Pop Flamer, Chameleon, Saturn, Top Roller, Dingo, and Formation Z