Official patches handled this, but many pirated versions are stuck in 4:3. The Best Way to Get It Today If you want the game for free (or close to it) legally:
The Silenced Shotgun, the Sawed-off Shotgun, and the Crossbow. Far Cry 2 Fortune’s Edition Free Download
Far Cry 2 has been given away for free multiple times to Prime members. It’s worth checking your library if you’ve been a subscriber for a while. Pro Tip for Modern PCs Official patches handled this, but many pirated versions