Portal, Chamber 15, 28 seconds
The depth of Portal's gameplay - combining twitch gaming, observational skills, planning and spatial awareness - creates a dizzying gulf between the casual player and the expert master, the difference that really puts a game into hardcore territory.
Here you'll see some truly advanced thinking with Portals, as the player zips in and out of the physics-bending warp holes at mindboggling pace, using beardy principles like velocity and momentum to crack this chamber with seemingly no effort at all.
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