|best| — Project Igi 1 All Missions Unlock

Unlock all 14 missions in Project I.G.I.: I’m Going In to bypass the game's challenging linear progression. Whether you want to jump straight to the high-stakes finale or revisit a favorite stealth mission like Get Priboi

Result: This should immediately grant access to all levels in the mission selection screen. Manual File Modification project igi 1 all missions unlock

🛠️ Implementation Methods

Method 1: Save file unlock (easiest for users)

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. Unlock all 14 missions in Project I

📦 Deliverable for users

File: IGI_All_Missions_Unlocker.exe (simple UI with one button)
Requirements: Windows 95/98/XP/7/10/11 (compatible mode for old OS)
Safety: No permanent changes – works on save file or memory only. If the key combination does not register on

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 the key combination does not register on your version of the game, importing a completed save folder is the most reliable alternative.

Method 2: Using a Pre-Made Unlocker Tool

For users uncomfortable with hex editing, third-party save unlockers exist. These executables patch the .sav file automatically.

| Problem | Solution | |---------|----------| | Console won’t open | Add -console to shortcut; use a different keyboard language layout. | | Cheat code ignored | Your version is modded. Try the save file method instead. | | Save file resets | Run the game as Administrator (right-click > Run as admin). | | Missions show but crash | Some missions require specific player coordinates. Load the mission from the main menu, not from console while in another map. | | GOG version restrictions | Install the IGI 1 DLL Patch that re-enables console commands. |