It's dangerous to go to Gamescom alone. Take a friend... and make them dress like a second Link or a Solid Snake or a Troll, Orc or Night Elf from World of Warcraft.
Gamescom 2010's biggest day, today, featured some capable cosplay from its attendees, as well as a trainwreck or two. It featured more Altairs and Ezios from Assassin's Creed than we would have ever expected, but maybe we'll save that brotherhood of dress-up assassins for another time.
Don't miss the Old Snake that looks impressively like he just stepped out of Metal Gear Solid 4 and some rare Jenova from Final Fantasy VII cosplay.