In the game, the player assumes the role of an allied officer, who has been entrusted to command a group of commandos on each of the game's twenty missions that they undertake. The game branched out into a series that used the same system of game mechanics, beginning with an expansion pack entitled Commandos: Beyond the Call of Duty in 1999, and later with three sequels - Commandos 2: Men of Courage in 2001, Commandos 3: Destination Berlin in 2003 and Commandos: Strike Force in 2006.

GameSpot Spain declared it Spain's biggest game hit of all time by 2002. The game proved to be a commercial success, with global sales above 1 million units. Each mission's objective varies, but ranges from sabotage, assassination or rescuing captured allied units, with players having a full view of a mission's map to plan their strategy and its execution in advance. The game sees players take control of a group of six Allied Commandos, who conduct a range of missions across wartime Europe and Africa, using small unit tactics. Commandos: Behind Enemy Lines is a 1998 real-time tactics video game developed by the Spanish company Pyro Studios and published by Eidos Interactive.

Commandos behind enemy lines mission 3