Unlocking all 14 missions in can be done using a specific keyboard shortcut or by replacing local game files with a completed save file. Option 1: The Main Menu Shortcut (Cheat Code)

the downloaded folder (usually named pc or containing files like user.dat ).

If you prefer a link instead of manual file editing Share public link

: Modern operating systems (Windows 10 and Windows 11) struggle with the game's older DirectX 7 renderer.

: Windows Prevents IGI from saving configuration changes due to folder permission restrictions.

While playing the mission, press and hold: .

Launch IGI.exe . When you enter the "Select Mission" screen, every level from Trainyard to Finding the Bomb will be available. Method 2: Manual Config Edit (For Advanced Users)

Cheat Engine is a powerful open-source tool that allows you to modify values in a running game's memory (like health, ammo, or mission states). The Project IGI community has created pre-made "Cheat Tables" ( .CT files) for this tool, which you can download and use.

is a cult-classic tactical first-person shooter released in 2000. Despite its age, it remains a staple for fans of hardcore, checkpoint-free stealth-action gameplay. However, one of the most persistent frustrations for players—both newcomers and veterans—is the game’s archaic save and mission progression system.

For purists who want to unlock missions organically via the cheat code, you need the console activation.

your IGI installation folder. It is usually found in C:\Program Files\Project IGI\ .