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White Box: FMAG

Second Printing
The original fantasy RPG distilled to its simplest form — four classes, compressed modifiers, and room to make it your own
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fantasy
Rules-LightClassic FantasyDungeon CrawlDeadlyHackableBeginner-FriendlyRandom Character CreationVancian CastingDescending ACHexcrawl
Languages: English
Diced20
System FamilyOSR
CostFree/$
LicenseOGL 1.0a
PublisherSeattle Hill Games
Year2016
Complexity Very Low
Accessibility Very High
Community Low

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.

Best 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.

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. Free PDF and under $5 in print makes 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.