The more we see of Naughty Dog’s games, the more we realise they’re an optical illusion. Uncharted 2: Among Thieves is no different, and this video showcasing the sequel’s iconic train level is eye-opening. It reveals how the set-piece works: by placing you on a gigantic loop. It then masks environmental changes with various camera tricks, giving the impression that you’re actually travelling.

While the above video does ruin the magic a little bit, it’s also fascinating. Like, all of the tricks and techniques that the developer uses here make sense, but they’re so devious that we never even thought about them while playing the campaign. Really amazing stuff.