Welcome to the Extreme Realism mod. This is a single and multiplayer modification. The entire aspect of the game has been changed. Being set in the same scenario as the normal game.
This is a wallpaper made by Captainpepsi when he had nothing to do.
This small patch includes a 32 and 64 bit version packed into a single zip file. This will fix the problem where you will crash to desktop when you try to join a ER server.