Ars Magica vs Dungeons & Dragons
Compare Ars Magica and Dungeons & Dragons side by side. See differences in complexity, dice, genre, cost, and more.
| Ars Magica | Dungeons & Dragons | |
|---|---|---|
| Genre | Fantasy, Historical | Fantasy |
| Play Style | Crunchy, Freeform Magic, Collaborative, Simulation, Open Source, Roll to Cast, Domain Management, Social Intrigue | Tactical, Heroic, Dungeon Crawl, Character Building, High-Fantasy, Beginner-Friendly, Classic Fantasy, Lore-Heavy, Ascending AC |
| Core Mechanic | Roll a d10 + Characteristic + Ability against an Ease Factor. Simple die rolls count the result at face value; stress die rolls on a 1 double the next roll (cascading), while a 0 risks a botch by rolling additional botch dice. Magic uses Technique + Form (five verbs like Creo, Perdo combined with ten nouns like Ignem, Corpus) to define any spell effect. Formulaic spells are pre-learned, spontaneous spells can attempt any Technique + Form combination by halving the casting total, and ritual spells handle large-scale or permanent effects. | 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. |
| Dice | d10 | d20 |
| Complexity | High | Medium |
| Accessibility | Medium | Very High |
| Runnability | Very High | High |
| License | CC BY-SA 4.0 | CC BY 4.0 (SRD); core books proprietary |
| Cost | $ | $$$ |
| Publisher | Atlas Games | Wizards of the Coast |
| Year | 2004 | 2024 |
| Best For | Groups who want a deeply researched medieval European setting with the most flexible magic system in tabletop RPGs and troupe-style play where multiple characters share the spotlight across seasons of game time. | Groups who want heroic fantasy combining tactical grid combat with deep character-build options, scaling from one-shots up through long multi-tier campaigns. |
| Highlights | Technique + Form magic system allows freeform spell creation by combining five verbs with ten nouns. Troupe-style play rotates magi, companions, and grogs so every player has multiple characters. Covenant management adds strategic play between adventures. Mythic Europe setting blends historical accuracy with medieval folklore and theology. | Advantage 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. |
| Considerations | Core rulebook is dense at 240 pages with extensive magic subsystems that require study before play. Laboratory rules, seasonal advancement, and covenant management demand significant bookkeeping. The troupe-style format requires buy-in from the whole group. Combat is deliberately secondary to magic and social play. | High-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. |