What is this and why are we here? A few days ago, on the official Northwind Adventures Discord server , there was a request for dungeon encounter tables for Hyperborea 3e. There are currently brilliant regional encounter tables on the official Hyperborea website by Ben Ball. The very great and sweet Len presented the idea to use the "Dungeon random Monster Level Determination Matrix" from AD&D's DMG (p.174). I am attempting here to present a solution that doesn't get me in trouble with any lawyers, so I am going to use the "Monster Sub-Table Matrix" from OSRIC 2e (p. 168) and I am not going to copy over any monster stats from the Hyperborea books. Regarding the encounter matrizes, OSRIC does it with a d12 instead of a d20, groups together levels 1-2 instead of 2-3, but overall seems to achieve pretty similar results. Procedure (ripped from OSRIC and AD&D) Choose the dungeon level (e.g. distance to the surface or just make it up, I am not your bos...