Xenogunner

"Xenogunner" is a single-player shooter game that offers an estimated 5 hours of gameplay. In the year 2011, players control Zeta, the kind king of the Xenolians, who must overthrow the powerful tyrant known as the "Xenogunner" and reclaim the throne. The game features intense boss battles and is inspired by 16-bit console games, with modern conveniences like mouse aiming and adjustable difficulty settings.