Game designers often spend years constructing expansive play experiences, complete with logical narrative structure, cut-scenes, and well-balanced enemy encounters.

But for some of the more industrious players out there, all of that is simply an invitation to bend the rules and recast the game in a new light, in which little glitches and exploits – not to mention memorization of the stages and mastery of maneuvers – hold the key to the fastest-possible playthroughs in games where quickness was never a core element.

While we may not all be quite as dedicated, speedrun clips luckily let us live vicariously through those players, and we've collected 10 of the absolute best and legitimate examples (in which no third-party tools are used to boost times), which prove equally dazzling and dumbfounding.