Codename: ICEMAN

Codename: ICEMAN (pronounced as "Iceman") is a graphical adventure game made with the SCI engine and published by the American computer game company Sierra On-Line in 1990. The lead designer was Jim Walls, who also created several Police Quest games.

ICEMAN involves a near-future political conspiracy involving the United States, the Soviet Union, and Tunisia. One of the game's notable features is that a large portion takes place in a detailed simulation of a submarine, requiring the player to manage the navigation and weapons systems of the fictional USS Blackhawk.

Mention of a "Codename: PHOENIX" in Sierra promotional material suggests that ICEMAN was meant to be the first part of a series, but disappointing sales ended the would-be franchise after one game.