Gamma World vs Starfinder
Compare Gamma World and Starfinder side by side. See differences in complexity, dice, genre, cost, and more.
| Gamma World | Starfinder | |
|---|---|---|
| Genre | Post-Apocalyptic, Scifi | Scifi |
| Tags | Superpowers, Random Character Creation, Classless, Gonzo, Comedy, Tactical, Grid-Based, Combat-Heavy, Beginner-Friendly, Deadly | Tactical, Crunchy, Character Building, Heroic, Ascending AC, Space Opera, Ship-Based, Exploration |
| Core Mechanic | Roll a d20 and add a modifier, then compare the total to a target number or one of four defenses: Armor Class, Fortitude, Reflex, or Will. Two randomly rolled character origins combine to set starting ability scores, skills, and powers instead of a chosen race and class. Alpha Mutation and Omega Tech cards drawn from a shared deck grant each character's most powerful and unpredictable abilities for the session. | d20 + modifier vs. DC. Three-action economy per turn. Four degrees of success. Cross-compatible with Pathfinder 2e. |
| Dice | d20 | d20 |
| Complexity | Medium | High |
| Accessibility | Medium | Very High |
| Runnability | Very High | Very High |
| License | Proprietary | ORC |
| Third-Party Publishing | Not yet researched | Not yet researched |
| Cost | $ | Free |
| Publisher | Wizards of the Coast | Paizo |
| Year | 2010 | 2024 |
| Best For | Groups who want a silly, fast-paced pickup game with randomly generated mutant heroes rather than a long-term character build. | Sci-fi fans who want Pathfinder 2e's tactical depth with plasma rifles and starships. Great for PF2e veterans looking for cross-compatible space adventure. |
| Highlights | Alpha Mutation and Omega Tech cards replace a fixed power list, so a character's abilities shift unpredictably as cards are drawn, used, and discarded between encounters. Rolling two random character origins instead of choosing a race and class produces unplanned combinations that push players toward improvised character concepts. A hundred-item Ancient Junk table turns ordinary scavenging into a steady stream of small, flavorful rewards between the rarer Omega Tech finds. | Free rules on Archives of Nethys, deep tactical combat, cross-compatible with PF2e, distinct class identity |
| Considerations | Character origins are rolled randomly from a fixed table, so a player who wants a specific concept must ask the Game Master for permission to choose origins instead. The starter box's 80 cards are the only power pool for groups without the two out-of-print expansion kits, capping how many distinct Alpha Mutations and Omega Tech items a table can draw. Running combat means tracking multiple readied and discarded card piles for each character in addition to the four defenses, conditions, and forced movement of the underlying 4th Edition engine. | Steep learning curve, fewer classes and options than PF2e (still growing), tactical starship combat rules deferred to a future supplement with current rules being narrative only |