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Project Igi 1 All Missions Unlock

The most useful and practical method for unlocking all missions instantly involves editing the game’s save files. Project IGI stores progression in simple text-based files. Here’s a step-by-step:

Note: Some modern repacks or the GoG version have checksums. If the game crashes or resets, you may need a dedicated save editor like “Project IGI Mission Unlocker” (available on community forums like ModDB or Reddit’s r/ProjectIGI).

The game stores mission progress in a binary file, e.g. savegame.sav or profile.sav.
By modifying a single byte at a known offset, all missions become selectable. project igi 1 all missions unlock

Example hex patch (for profile data):

Python script to unlock all missions:

import os
def unlock_all_missions():
save_path = os.path.expanduser("~\Documents\Project IGI\SaveGame.sav")
if not os.path.exists(save_path):
save_path = ".\SaveGame.sav"  # fallback to game folder
with open(save_path, "r+b") as f:
    data = bytearray(f.read())
    # Offset 0x2C: mission completion flags (1 byte per mission? No – bitfield)
    # Actually, in IGI: offset 0x34 is mission progress byte
    data[0x34] = 0xFF  # All missions done
    # Recalculate simple XOR checksum (byte at offset 0x00)
    checksum = 0
    for i in range(1, len(data)):
        checksum ^= data[i]
    data[0x00] = checksum
    f.seek(0)
    f.write(data)
print("All missions unlocked!")

if name == "main":
unlock_all_missions()
 The most useful and practical method for unlocking

map missionXX

Replace XX with the mission number from 01 to 14. Note: Some modern repacks or the GoG version have checksums

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