Advanced Dungeons & Dragons 1st Edition
1st EditionBest 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.
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.
- Free to tryNothing freeNo free rules or starter
- Get it nowSold newIn print or as a legal PDF
- ✓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
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