TTRPG Wiki

Compare tabletop RPG systems to find your next game

Whitehack

Fourth Edition
Roll-under fantasy where groups define your character and miracles cost harm points
View on DriveThruRPG →Affiliate link: we may earn a commission at no extra cost to you.

Best For

Experienced players who want a concise, elegant OSR system that rewards creative play: where freeform character groups replace rigid skill lists and miracles are flexible but costly.

Core Mechanic

Roll d20 under your attribute to succeed; the face value of a success indicates quality. Positive double rolls (roll 2d20, pick best) and negative double rolls (pick worst) replace flat modifiers. Characters are defined by Groups (species, vocations, and affiliations) which grant advantage on relevant tasks. The Wise class casts miracles by spending HP, with effects triangulated by their groups and wordings.

Diced20 + 3d6
System FamilyOSR
PublisherChristian Mehrstam
Year2023
ComplexityHow much there is to learn
Low

Checks roll a d20 under an attribute, with the face value showing quality. It is a spare, flexible take on old-school D&D built around clever attribute use. Little needs memorizing.

AvailabilityHow you get the rules
  • Free to tryNothing freeNo free rules or starter
  • Get it nowSold newIn print or as a legal PDF
RunnabilityWhat the book gives you to run it
  • ✓IndexFind any rule by page number
  • ✓GM guidanceA chapter on how to run the game
  • ✓Examples of playRules shown in action at the table
  • ✓Quick referenceCheat sheet or summary tables
  • ✓Cross-referencesRules point to each other by page

5 of 5 book tools found in the core book

Highlights

Concise yet deep (~136 pages), Groups system replaces both skills and feats, compatible with old-school modules from 1974 onward, Auction mechanic adds tension to extended contests, miracles system rewards creative description, four editions of refinement

Considerations

Dense writing requires careful reading: not a quick-start game, assumes familiarity with old-school play, no bestiary or setting included, rare classes may feel underdeveloped

Rules license Proprietary

Similar systems

Added