Thrive to Survive vs When Sky & Sea Were Not Named

Compare Thrive to Survive and When Sky & Sea Were Not Named side by side. See differences in complexity, dice, genre, and more.

	Thrive to Survive	When Sky & Sea Were Not Named
Genre	Horror, Modern, Post-Apocalyptic	Fantasy
Tags	Survival, Tactical, Crunchy, Resource Management, Base-Building, Character Building, Simulation, Skill-Based	Tactical, Theater of the Mind, Resource Management, Faction Play, Lore-Heavy, Base-Building, Exploration
Core Mechanic	Roll d20 + skill ranks + the related attribute and meet or beat a difficulty set by the Apocalypse Master. An untrained skill adds half its attribute, while opposed checks compare totals.	Each hero has four action dice, one for each action type (Attack, Brace, Compel, Maneuver), with the die size set from d4 to d12 by the relevant attributes. To act, roll the matching die and read it against two thresholds. Against an obstacle, the Guide sets a failure threshold and a struggle threshold. Against a foe, the target's attribute is the failure threshold and its defense is the struggle threshold. Beating the higher number is a Success, beating only the lower is a Struggle that costs something, and beating neither is a Failure. Attacks deal damage equal to the roll minus the target's Guard and Armor, so one roll settles both the hit and its severity.
Dice	d20	d4–d12
Complexity	High	High
Availability	Paid	Free core rules
Runnability	4 of 5 book tools	3 of 5 book tools
License	Proprietary	All Rights Reserved
Third-Party Publishing	Not yet researched	Not yet researched
Publisher	Caden Humpherys	Purple People Games
Year	2026	2023
Languages	English	English
Best For	Groups who want a long-form modern zombie-survival campaign built around tactical grid combat, body-location injuries, detailed crafting, and turning scavenged materials into a defended settlement. It suits an Apocalypse Master who wants tools for custom infections, encounters, and campaign goals.	Groups settling in for a multi-session campaign who want combat built on resource trade-offs, spellcasters that each play differently, and a Guide comfortable improvising rulings. The island-hopping rescue-and-rebuild structure rewards tables that enjoy both tactical fights and settlement-scale stakes.
Highlights	Attacks pair maneuver-specific hit numbers with 2d10 location rolls, so armor, crippling injuries, and targeted strikes make each body part matter. Crafting links designs, material types, construction, generators, and storage, turning scavenged supplies into weapons and a working refuge. The Apocalypse Master chooses an infection model and modifies zombie templates, allowing campaigns to shift from base defense to a cure hunt without changing the core rules.	Each of the four defenses both resists incoming actions and doubles as the resource a hero spends to power abilities, so every turn weighs guarding against acting. A hero rolls a different die size for each of the four action types, so strengths and weaknesses live in which die they pick up rather than in numeric modifiers. Invoking an Ideal after a roll spends Spirit for an advantage die the Guide sizes to how dramatic the moment is, linking vivid roleplay to a mechanical boost.
Considerations	Combat resolves attacks through hit checks, location rolls, armor reduction, location health, and injury effects, creating multiple steps for every successful strike. Characters track food, water, sleep, fatigue, carry weight, ammunition, and ten crafting materials, making resource bookkeeping a central part of play. The system assumes a modern zombie apocalypse, so adapting it to other settings requires replacing much of its equipment, infection, and campaign material.	The three spellcasting callings each run a separate resource economy, creating a real skill gap between players who take a magical calling and those who do not. The Shinarian origin locks Agility at 0, which bars the Wanderer calling and leaves those heroes unable to evade, outflank, or hide effectively. Sizing invoked Ideal dice, setting challenge thresholds, and reading the Dreamshape table all rest on Guide judgment rather than fixed numbers, which favors improvisational Guides over those who want firm procedures.