Doomed Speed Demos Archive (often abbreviated DSDA) is a website that collects speedruns for various PWADS. It was created by Opulent on September 1st, 2000. The archive contains well over 15,000 demos by more than 250 speedrunners. It allows many different demo types, expanding on those allowed in Compet-n. It also offers tutorials on recording and playing demos, hosts binaries of various source ports and useful utilities. The DSDA lists all players and their contributions to the archive, including total running time and ratings.