Speedruns are pretty popular in many games. The goal is to finish the game as fast as possible. There are lots of pokemon speed run videos on youtube. In many MMO's, people do speed runs of elite areas, where beating the instance as fast as possible is great for the end loot and bragging rights.   I used to play Guild Wars 1, and a popular end game aspect was (and still is) to speed clear elite areas for the rewards. Tons of teamwork and cooperation is required to keep pushing tho