Characters were created by deriving rules from the Beyond the Wall system. Character concepts come from two personae in an early 1990s AD&D 2e campaign.

Overlaid onto a majority of BTW's rules are the following house rules:

• Fortune Points
  • these points are restored after a Long Rest
  • sacrifice a FP to re-roll a failed saving throw
  • sacrifice a FP to re-roll a failed attack roll
  • sacrifice a FP to re-roll critical damage before doubling
  • sacrifice a FP to re-roll a failed ability check
  • sacrifice a FP to cry out to Cromm for healing (2d6)
  • sacrifice a FP to give an ally either a re-roll or advantage on next roll
• Leveling
  • Character Advancement is unlimited in levels
  • Every five levels, increase one stat by one point
  • after level 10, you only gain Con bonus to HP
  • Dorn & Exie gain in FGT/THF when leveling
  • Zorvin will gain in CLE/WIZ when leveling
  • PCs use the better saving throw vs each type of save
  • FGT/THF gains 7+Con bonus HP upon leveling
  • CLE/WIZ gains 5+ Con bonus HP upon leveling
  • FGT/THF gain a Warrior Knack at levels 1, 3, 6, and 9
• Undead
  • Levels aren't permanent drained by powerful undead
    • restore one level whenever you:
      • get (a) full day of rest and (b) a remove curse