There have been a couple of similar posts on this subject already, see the one about beating Castlevania: Symphony of the Night with assembly code here (along with a couple other videos about Super Mario World) or the one about the race to conquer Mario Kart's Choco Mountain in seconds here, but I'm creating a more generic thread here which any future similar video (or article) can be posted to.
To start off the thread, here's a video of how speedrunners beat a trial version of The Legend of Zelda: Ocarina of Time which would automatically reset after 5 minutes had elapsed. The methods used in this one is similar to the above linked Castlevania video, where the speedrunner performs certain actions in the game to rewrite parts of system/game memory to get the desired result.
How Speedrunners Beat the Brawl Ocarina of Time Demo
To start off the thread, here's a video of how speedrunners beat a trial version of The Legend of Zelda: Ocarina of Time which would automatically reset after 5 minutes had elapsed. The methods used in this one is similar to the above linked Castlevania video, where the speedrunner performs certain actions in the game to rewrite parts of system/game memory to get the desired result.
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Super Smash Bros. Brawl contains a timed demo of Zelda: Ocarina of Time, with only 5 minutes of playtime. Defeating Ganon and beating the game sounds completely impossible in the demo! However, speedrunners have found a way. Here's how they did it.
How Speedrunners Beat the Brawl Ocarina of Time Demo