59 levels to play before you die: G - L

Half-Life 2 (PC, 360, PS3) | "We Don't Go To Ravenholm..."
In a game as superbly made as Half-Life 2, it's almost impossible to pin a single section that proves just how awesome and ground-breaking Valve's masterpiece is. So we won't bother. Instead, we'll focus on the chapter that gave us the most unbridled balls-out pleasure - the stunning mix of dark horror, hilarious violence and riotous fun with physics that is the zombie-infested wasteland of Ravenholm.

Eerie from the beginning, Ravenholm is an exercise in how atmosphere and subtle design elevates a videogame into the 10/10 zone. The newly-acquired Gravity Gun immediately becomes an extension of your FPS arsenal in a way that's so natural you can't imagine being without it. And yet, Valve doesn't force the Gravity Gun's abilities on you. It just preps the area, and lets you find out for yourself: "Oh, look, that zombie's been eviscerated by a razor sharp saw blade. "ZAP! " Oh, now I'm carrying the sawblade. " ZZZING! " God! I can fire the sawblade!"