TTRPG Wiki

Compare tabletop RPG systems to find your next game

Advanced Dungeons & Dragons 1st Edition

1st Edition
Fantasy treasure expeditions that grow into stronghold campaigns
View on DriveThruRPG →Affiliate link: we may earn a commission at no extra cost to you.
Languages: English, French, German

Best For

Groups who want a referee-built fantasy campaign driven by treasure expeditions and careful resource planning.

Core Mechanic

Attack rolls use a d20 against class-and-level matrices to hit descending Armor Class. Other actions follow distinct procedures rather than a universal check.

Diced20
System FamilyOSR
PublisherTSR Games
Year1977
ComplexityHow much there is to learn
Very High

Combat starts with a d20 attack roll against a matrix. Class advancement and prepared spellcasting each have substantial restrictions to learn. The many interlocking subsystems require significant study before first play.

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 rarely point to each other by page

4 of 5 book tools found in the core book

Highlights

  • Recovered treasure earns experience, rewarding successful expeditions back to a safe base.
  • Prepared spells make choosing tomorrow’s magic part of expedition planning.
  • Dungeon generators let the referee create unexplored passages during play.

Considerations

  • Racial limits restrict which classes and advancement paths a character can choose.
  • Successful hits interrupt casting and expend the spell.
  • Failed saves against many monster attacks can kill characters outright.

No verified third-party publishing route found · Reviewed 2026-10-09 · Summary only, not legal advice. Check current terms before publishing. Rules license All Rights Reserved

Similar systems

Added