In case you haven’t heard of Games Done Quick, it’s a twice a year week long 24/7 marathon of older games done by famous speedrunners! Speedrunning means that these players use tricks and glitches to get through the game as quickly as possible, sometimes setting world records for it. Most importantly, they’re doing this to raise donations for the Prevent Cancer Foundation, so you’re contributing to a great cause by watching :).
You can also donate towards silly incentives like asking them to sing Disney songs during the Kingdom Hearts playthrough or speedrun breaking things like saving the animals in Metroid. Anyway, check it out because it is really very cool! One of my favorite things to watch on Twitch ^_^.