Summer Games Done Quick, the annual summertime speedrunning marathon run by SpeedDemosArchive, has started! The runs are well underway and donations are continually rolling in, all in support of Doctors Without Borders. Of course, it would not be a Games Done Quick marathon without lots of fun donation incentives, and plenty of great prizes to win. Hit the jump for the stream, an updated schedule of times for Zelda speedruns, and a list of prizes to be won during those…