To play the paintball multiplayer mode in GoldenEye 007: Reloaded you'll have to buy the game from Game.
Specifically, you'll have to buy the MI6 Edition of GoldenEye 007: Reloaded - a UK exclusive for Game. It's the only version Game lists, and is available for £39.99.
The MI6 Edition also includes the Classic Conflict multiplayer mode and the Moonraker Black Laser rifle.
The PS3 version packs an extra Hugo Drake character and Moonraker Laser pistol weapon as well.
"Reloaded, rebuilt, resupplied: that's GoldenEye in 2011," wrote Christian Donlan for Eurogamer in his GoldenEye 007: Reloaded preview. "Next year brings that new movie and possibly another Bond game to go with it.
"Until then, this should be a decent, if familiar, stop-gap."