Sentinel

Sentinel is a light gun shooting game where the player is tasked with protecting a hovering orb, known as the Sentinel, from waves of enemies. The gameplay is similar to the arcade classic Crossbow, with the player using a light gun to shoot enemies and prevent them from damaging or capturing the Sentinel orb. The orb hovers above the surface of a planet, and players must defend it against various types of hostile forces. The game features four planets, each with increasing difficulty. As the player progresses through the levels, enemies become more numerous and aggressive. Some enemies can fire missiles, which the player must shoot down before they reach the Sentinel orb. Additionally, the player can trigger smart bombs by shooting the orb itself, which clear enemies from the screen.