Lock-On is a 1986 first-person combat flight simulator video game with a futuristic theme. It was developed by Tatsumi and licensed to Data East for US distribution. Its graphics feature scaling sprites and a full-screen rotation effect. The game consists of 20 levels. Gameplay is similar to After Burner: the plane follows a predefined path, but the player can steer it slightly to evade incoming missiles. The player can fire guns and homing missiles, the latter of which requires the eponymous lock-on first.

You are a fighter pilot going through wave after wave of enemies from a 1st Person Perspective. You control a gun-sight and you try to shoot as many planes and ground defences while you fly through the air. Your sights will automatically Lock-On to a target and you can fire a missile to hit them.