Codename: ICEMAN

Codename: ICEMAN is a text parser-based adventure game. Commands must be typed, such as CLIMB UP to ascend a ladder. The interface features some technical innovations for Sierra games, such as shortcutting some inputs (typing LOOK while near an object instead of needing to type LOOK OBJECT) and allowing certain actions to be performed with a mouse.

Within the game's "setting of espionage and intrigue," players must also master a variety of detailed procedural tasks. These tasks include learning Navy terminology, decoding encrypted messages, and correctly administering CPR. These procedural tasks require regular referencing of the game's included manual. A dice game also features prominently, requiring the player to defeat submarine crew in a game of chance.

The story takes place during a future global oil shortage, when Tunisia is discovered to possess a surplus of high-grade oil. While the Soviet and US governments try to acquire as much of the oil as they can, Soviet-backed terrorists kidnap a US ambassador in hopes of provoking an international incident.

Naval officer Johnny Westland is informed about the situation while on leave in Tahiti and is called back for the rescue mission. The night before returning to duty, he meets a woman named Stacy and has a one-night stand.

Codename: ICEMAN received mixed reviews at release and has received more negative reviews in retrospect. Some contemporary reviewers were very positive. The reviewer for Games International scored it 10 out of 10 and called it "the most sophisticated adventure game I have ever played."

Computer Gaming World stated the submarine simulation was exciting and also credited lead artist Sheryl Lloyd's work: "Aesthetically, the game has much to commend it." Composer Mark Selbert's score was also credited as "spectacular."