D-Force (Dimensional Force in Japan) is a vertical scrolling shooter video game released for the Super NES/Famicom in 1991. It involves an Apache helicopter set on defeating an evil Middle Eastern dictator. There are seven levels which feature six countries. Some of the levels involve switching altitudes in order to attack enemies from a different height.
The main menu splits the game up into three sections; "Game Start," "Shooting Mode," and "Exploration Mode."
Game Start plays through all of the game's seven levels. Shooting Mode plays only the four levels where consistent shooting and dodging enemy fire is the main focus. These levels are also the only levels that feature the ability to gain bullet and missile power-ups to the helicopter. "Exploration Mode" plays only the three levels which involve switching altitudes to shoot down certain enemies and avoid obstacles.
Gameplay involves being the pilot of an Apache Helicopter, and shooting enemies down in the style of a vertical scrolling shooter. Large red gunships can be shot down to gain power-ups for the helicopter in order to upgrade the guns and have it fire homing missiles. Each level features a midboss and a boss, and both must be destroyed in order to advance to the next level. The style of the levels as the player advances alternates between "Shooting Mode" and "Exploration Mode," where the latter involves levels set in a fantasy-like setting and are the only level types that provide no power-ups to the player and give the player the ability to switch their altitude.