The stzdm3.bsp file you have requested: Maps Levels Missions / Deathmatch / STZ DM3 - 851.72kb 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:
A new Quake Deathmatch map called STZDM3 by stz. The map is designed for duels and 2 on 2.