Pokémon: Red Version is part of the first generation of games within its famous series, known for having a very large number of beneficial glitches. In fact, the game can be completed in less than one minute of in-game time by save data corruption as shown by this run, and it can be completed in around 10 minutes using a more "conventional" glitch, as shown by this run. These runs break the game, and avoid much of the gameplay intended by the developers.
You can watch the complete run being played back on a console with additional author commentary.