IGI 1 is a stealth-based game that requires players to complete objectives while avoiding detection by enemy guards. The game features a variety of missions, each with its own unique objectives and challenges. The game has a total of 10 main missions, and several secondary missions that can be completed to earn rewards.
Note: There is no console or mission-select cheat code like UNLOCKALL in IGI 1 — unlike in IGI 2 . For the original IGI, save file replacement is the simplest reliable method.
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