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Adventurer Conqueror King System vs Dungeons & Dragons

Compare Adventurer Conqueror King System and Dungeons & Dragons side by side. See differences in complexity, dice, genre, cost, and more.

Adventurer Conqueror King SystemDungeons & Dragons
GenreFantasyFantasy
Play StyleCrunchy, Sandbox, Domain Management, Character Building, Simulation, Dungeon Crawl, Ascending AC, Vancian CastingTactical, Heroic, Dungeon Crawl, Character Building, High-Fantasy, Beginner-Friendly, Classic Fantasy, Lore-Heavy, Ascending AC
Core MechanicRoll d20 + modifiers vs. a target value for attack throws, saving throws, and proficiency throws. 18 classes across core (Fighter, Explorer, Thief, Mage, Crusader, Venturer), campaign (Assassin, Barbarian, Bard, Bladedancer, Paladin, Priestess, Shaman, Warlock, Witch), and demi-human archetypes. 110 proficiencies and 378 spells. Characters progress from adventurers to domain rulers with integrated systems for strongholds, realms, mercantile ventures, criminal syndicates, armies, pitched battles, and sieges.Roll d20 + modifier against a target DC (for ability checks and saving throws) or AC (for attacks). Meeting or exceeding the target succeeds. Advantage rolls 2d20 and takes the higher; disadvantage takes the lower, replacing most situational modifiers.
Diced20d20
ComplexityHighMedium
AccessibilityLowVery High
RunnabilityHighHigh
LicenseAll Rights ReservedCC BY 4.0 (SRD); core books proprietary
Cost$$$$$$
PublisherAutarch LLCWizards of the Coast
Year20242024
Best ForGroups who want a B/X-rooted OSR game that seamlessly scales from dungeon crawling to ruling kingdoms, with deeply integrated economics, domain management, and mass combat.Groups who want heroic fantasy combining tactical grid combat with deep character-build options, scaling from one-shots up through long multi-tier campaigns.
HighlightsDetailed domain and kingdom management rules, economics and mercantile systems are integrated throughout, mass combat scales from skirmishes to wars, 18 classes with quick-start templates, builds on B/X foundationsAdvantage and disadvantage collapse most situational modifiers into one mechanic: roll a second d20 and keep the higher or lower, so play rarely stops to total small bonuses. Each of the 12 classes offers four subclasses in the 2024 Player's Handbook, letting players reshape a class's role without multiclassing. Bounded accuracy keeps proficiency bonuses small, so low-level threats stay relevant in numbers and DCs read consistently across all tiers.
Considerations540+ page rulebook is intimidating, tightly coupled subsystems, fantasy-only with narrow genre support, very high GM prep for domain-level playHigh-level play (tier 3–4) introduces significant spell interaction complexity and encounter balancing challenges for GMs. No official rules for non-fantasy genres. Three core books at $50 each represent a significant investment for the full rules.