Dead Angle is a 1988 arcade game developed by Seibu Kaihatsu. It is the follow-up to the company's mobster-themed Empire City: 1931. In Dead Angle, players take control of the game's protagonist, who must rescue his girlfriend from a mob boss. A port of the game was released by Sega for its Sega Master System.

Like Empire City: 1931 before it, players use a joystick to move a crosshair along the screen and shoot enemies. Dead Angle adds an onscreen representation of the player's character in the form of a silhouette. Multiple enemies now run in front of the player - the silhouette turns red when in the line of fire and is filled with bullet holes as it is shot. Just as in Empire City, players can defend against shots, this time by pressing the duck button, which renders the player invulnerable for a very short period of time. Players start the game out with a standard pistol, but can pick up a tommy gun or a shotgun and use grenades as well. Many of the objects in the background can be damaged or destroyed.

Players advance through the various time limited levels, from Italy to New York City, Kansas, then Chicago, by eliminating a set amount of mobsters. The player must then fight the boss of that level. The final boss must be defeated with one precise shot while he uses his hostage as a human shield.