Index Card RPG
Master EditionFast d20 action stripped to the bone — one Target, effort dice, and index cards
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Languages: English
Diced20 + d4–d12
System FamilyOSR
Cost$$
License3rd Party License
PublisherRunehammer Games
Year2019
Complexity
Low
Accessibility
Medium
Community
High
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.
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.
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