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Index Card RPG

Master Edition
Fast d20 action stripped to the bone: one Target, effort dice, and index cards
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Best For

Groups who love D&D's d20 feel but want something faster, lighter, and more improvisational. Excellent for high-energy dungeon crawls with minimal prep.

Core Mechanic

Roll d20 + stat vs. a single Target Number for the whole scene. On a hit, roll an Effort die (d4–d12 by type) to chip away at a task's Hearts (10 HP each). Timer dice count down each round to create urgency.

Diced20 + d4–d12
System FamilyOSR
PublisherRunehammer Games
Year2019
ComplexityHow much there is to learn
Low

Roll a d20 plus a stat against one target number for the whole scene, then an Effort die to chip away at a task. The single-target simplicity keeps play fast and punchy. Hearts abstract progress.

AvailabilityHow you get the rules
  • Free to tryQuickstartA free starter you can actually play
  • Get it nowSold newIn print or as a legal PDF
RunnabilityWhat the book gives you to run it
  • –IndexNo back-of-book index or page-keyed reference tables
  • ✓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 rarely point to each other by page

3 of 5 book tools found in the core book

Highlights

Very fast play, extensive GM tools, five genre settings included, highly hackable, timer dice create real tension

Considerations

DIY philosophy can overwhelm new GMs, loot-as-progression feels punishing if gear is lost

Rules license 3rd Party License

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