D-Day is a wargame that simulates the Normandy landings of World War II.

[1] Focusing on platoon-level warfare, D-Day tasks players with commanding units representing various elements of World War II combat, including tanks, artillery, trucks, landing craft, and infantry groups.

[2] D-Day is written in Basic and lacks anti-copying protection, with the manual providing instructions on how to back up the entire game.

[2] Roger Kean previewed D-Day in Crash #9 (October 1984), calling it "ideal for play-by-mail" and "a classic strategy war game which requires a deal of skill and judgement against another human opponent".

Mike notes that finding opponents may be difficult, and the length of the game, with each turn taking up to half an hour, may deter some players.