PSS2
Minerals
0
A sacrifice destroys one crew for good and pays back a fixed set of rewards: a lump of currency, Prestige Fragments of that crew's rarity, Memory Eraser Fragments, and Laxative Fragments if the crew was ever trained. GUARANTEE is what the same crew returns every time, and it is the number to plan with.
Fragments follow how expensive the crew's climb got rather than the level number itself: the gas the last level cost is measured against the gas of the highest level your ship lets that crew reach, and that scale is steep, so the top levels are worth many times the first ten. The ship allows four crew levels per ship level, 32 on a level 8 ship and 40 on a level 10 one, and a crew standing at that ceiling returns the full amount its rarity allows. A level 1 crew returns no fragments at all.
Each filled star adds one more full copy of the reward, so a crew with two stars returns three times what the same crew returns with none. Currency and all three kinds of fragment are multiplied together. The ceiling follows the rarity ladder: one star on a Common crew, five on a Hero. A Special always carries all six, so its stars are not up to you.
Common, Elite and Unique crew pay back minerals; Epic, Hero and Special pay back starbux. Neither reads the level, so even a level 1 crew hands back its full currency while returning nothing else. Starbux are the same for every rarity from Epic up and grow with stars only, and the tile prints the amount. Minerals are counted off the price of recruiting that crew, which climbs with the number of crew already on your account, so the same sacrifice pays a different lump to every player and the tile names the reward without a number.
Memory Eraser Fragments follow the same level progress as Prestige Fragments, multiplied by the crew's place on the rarity ladder, which is why a Hero returns several times what a Common does. Laxative Fragments ignore the level and read the training bar instead: what counts is how close the crew got to its own training ceiling, 50% on a Common and rising to 100% on a Special. An untrained crew returns none of them. Dr Mew and Shane train up to 100% although they are Unique and Epic, while the form stops at their rarity's ceiling, so for these two it shows more Laxative Fragments than the sacrifice pays.
GAS INVESTED and XP INVESTED are not part of the reward. They are the cost of raising this crew from level 1 to the level in the form, so they say what the sacrifice writes off. Advanced Training discounts gas and nothing else, which is why XP stays put when you change the research.
Common crew can be sacrificed from the start. Elite needs Crew Sacrifice I, Unique and Epic need Crew Sacrifice II, and Crew Sacrifice III opens both Hero and Special, although its description stops at Hero. The LAB RESEARCH card links that step with its laboratory level and cost. Legendary crew cannot be sacrificed, so they are absent from the rarity list.
The game publishes none of this. Every rule on this page was reconstructed by us from many experiments: crew of different rarities, levels, stars and training were sacrificed, the results written down, and the formulas fitted to them. They agree with everything measured so far, but a finite number of runs cannot prove a formula, and the game changes.
Worked example: Farming Memory Erasers.