White Box: FMAG
Second PrintingBest For
Groups wanting the simplest possible version of original D&D: four classes, compressed modifiers, and intentional rules gaps that invite house rules and Referee creativity.
Core Mechanic
Roll d20 + modifiers against a target number derived from the defender's Armor Class (descending AC by default, ascending AC optional). Attribute modifiers are compressed to −1, 0, or +1. Each class has a single saving throw number that improves with level. Side-based initiative is rolled each round on d6.
Roll a d20 against an AC-derived target, with minimal attributes. It is a clean, light retro-clone of original D&D.
- Free to tryFull core rulesLegally free as an SRD, PDF, or official web rules
- Get it nowAvailable nowFree to download or read online
- –IndexNo back-of-book index or page-keyed reference tables
- ✓GM guidanceA chapter on how to run the game
- –Examples of playNo worked examples of play
- ✓Quick referenceCheat sheet or summary tables
- –Cross-referencesRules rarely point to each other by page
2 of 5 book tools found in the core book
Highlights
Attribute modifiers compressed to −1/0/+1 keeps math fast and reduces stat dependency. Complete game in 143 pages including monsters, treasure, spells, and wilderness/dungeon procedures. A free PDF and a low-cost print edition make it one of the most accessible OSR games. Intentional rules gaps and a blank House Rules page explicitly invite customization.
Considerations
Four classes (three without the optional Thief) limits character variety. No formal skill system: the Referee adjudicates all non-combat actions. Level tables cap at 10, requiring house rules for extended campaigns.
Rules license OGL 1.0a
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