Speedruns of videogames

Since e-sports and gaming events are more and more common in our generation, I’d like to point out the “other side” of core gamers.
While most of you mainly know about the big gaming tournaments of counterstrike, league of legends/dota or fighting games, there are also the ones who fight against an invisible opponent, he’s not a human, nor a living thing in general. It’s the “TIME”. Speedruns yeah well, people who try to finish videogames as fast as possible.
Didn’t know of it yet? Well here we go~