The sddmsp_demos.exe file you have requested: Modifications / SuperDuper Quake / SDDSMP Demos - 25.2mb is not available. Perhaps try browsing all files for the game Quake and upload any files you want to share or are missing. This is the only information we could locate:
Just a bunch of goofy demos to go with the mod. Requires the mod and bengtquake.