Duty Wars is a turn-based strategy game that immerses players in World War 2 scenarios, inspired by the Advance Wars series. Players build and command units on a tiled map to capture enemy capitals or eliminate all opposing forces. The game features two primary modes: campaign and versus. The campaign mode includes three unique campaigns, where players can control the USA, USSR, and Japan across 15 missions inspired by historical battles such as Normandy and Stalingrad. Completing missions unlocks maps for the versus mode, enhancing replayability.

In versus mode, players can challenge friends or AI opponents on any of the 30 available maps. Duty Wars boasts a diverse roster of 17 units, including infantry, tanks, and naval vessels, with each army having a unique special unit. The game supports four playable armies: USA, Germany, USSR, and Japan, with features like automatic saving and multiplayer options for up to four players. It is available in English and French, ensuring accessibility for a broader audience.