Homestuck is to three-panel gag-a-day webomics what the Marvel multiverse is to the local funny papers. The long-running series is a convoluted mass of mythology, musical interludes and flash animations, but it began life as part of creator Andrew Hussie's MS Paint Adventure series, a sequence of webcomics that mimicked Choose Your Own Adventure books and cumbersome point and click mechanics. Homestuck began by sending…