Eclipse Phase vs When the Moon Hangs Low
Compare Eclipse Phase and When the Moon Hangs Low side by side. See differences in complexity, dice, genre, and more.
| Eclipse Phase | When the Moon Hangs Low | |
|---|---|---|
| Genre | Sci-Fi, Horror, Post-Apocalyptic | Horror, Fantasy |
| Tags | Crunchy, Fear & Stress Mechanics, Weird, Investigation, Espionage, Faction Play, CC-Licensed Rules | Fear & Stress Mechanics, Dark Fantasy, Corruption, Investigation, Faction Play, Tactical, Solo-Friendly, Mission-Based |
| Core Mechanic | Roll d100 and try to land equal to or under your skill (or aptitude × 3 for unskilled checks), adjusted by difficulty modifiers in ±10 increments. The 33/66 rule grades each roll on a single throw: a success of 33 or higher is a superior success, a failure of 66 or lower is a superior failure, and doubles (00, 11, 22, …) are criticals. Four pools, Insight (mental), Moxie (social), Vigor (physical), and Flex (wild card), spend to add +20 to target numbers, flip-flop a roll's digits, upgrade a success, ignore wounds or trauma, or introduce narrative elements like NPCs and environmental details. | Roll a pool of d6 equal to the stat tied to the skill and count successes, with each die succeeding on 5–6 when Untrained, 4–6 when Trained, and 3–6 when Mastered. The number of successes must meet or beat a Difficulty Value set by the Gamemaster. Bonus and penalty dice adjust the pool. A penalty die that rolls 5–6 cancels a success. Opposed checks compare success counts instead of a fixed Difficulty Value. |
| Dice | d100 | d6 dice pool |
| Complexity | High | High |
| Availability | Free core rules | Paid |
| Runnability | 5 of 5 book tools | 3 of 5 book tools |
| License | Creative Commons CC BY-NC-SA 4.0 | Proprietary |
| Third-Party Publishing | Not yet researched | Not yet researched |
| Publisher | Posthuman Studios | Isolation Games |
| Year | 2019 | 2023 |
| Languages | English | English |
| Best For | Groups who want hard transhumanist sci-fi with cosmic horror undertones, dense subsystems for hacking and body-swapping, and the Firewall conspiracy framework where cortical-stack backups turn death into a setback rather than the end of a character. | Groups who want gothic-horror monster-hunting and investigation on a contract-driven mission structure, where characters carry a permanent curse that escalates as they lean on their powers. Also supports solo or GM-less play through the built-in Lone Hunter rules. |
| Highlights | The ego/morph split separates mind from body: characters back up their cortical stacks and can resleeve into biological morphs, robotic synthmorphs, or digital infomorphs between sessions, making body choice a tactical decision and death a recoverable setback. The 33/66 rule grades each percentile roll on a continuous scale of superior success or superior failure without rerolls, so a single throw produces a degree of outcome rather than just pass/fail. Seven distinct reputation networks (@-rep, c-rep, f-rep, g-rep, i-rep, r-rep, x-rep) replace cash for many transactions in post-scarcity territory, modeling factional standing as a parallel economy with its own favor limits and weekly refresh caps. | Each of the twelve Marks grants a supernatural Boon paired with a Curse that advances a stage every time the hunter runs out of Resolve, so power comes bundled with an escalating personal cost. Influence earned by bluffing, charming, or intimidating a faction accumulates as a spendable resource that buys concrete favors from four rival powers, turning social play into a persistent currency. A full Lone Hunter mode replaces the Gamemaster's difficulties with a success-tier table and twist tables, letting the same character and dice run solo without a separate ruleset. |
| Considerations | Bookkeeping splits across an ego sheet (mind, skills, traits, pools, rep) and a separate morph sheet (body, ware, Durability, derived combat stats), and resleeving mid-campaign swaps out the morph half including pool maximums. The book takes an overtly political stance: the introduction states it is "not the game for you" if you support authoritarianism, and faction writeups present anarchist and autonomist values as the authorial baseline rather than one option among many. Routine cortical-stack backups make character death recoverable by design, so traditional life-or-death stakes need to be reframed around backup destruction, exsurgent infection, or memory lack to carry weight. | A hunter's Mark is chosen at creation and can never be changed, locking in both its Boon and the eventual monstrous transformation the character is fated toward. The setting leaves its central mysteries, including the nature of the Bitter Sacrament and the buried ympir, deliberately unanswered for each Gamemaster to resolve or not. Most antagonists are Minions that never roll to Parry, Dodge, or Counterattack, so rank-and-file fights reduce to attackers rolling against a fixed number instead of opposed checks. |