Guides
How this site works, and why
Three pages that state our standard rather than assuming you will infer it: where the numbers come from, how the upgrade arithmetic works, and why we build calculators instead of answers.
Data standard
How we source and verify game data
Four confidence levels, what we publish when a number cannot be verified, and the four things we never do — including never letting sample data reach a reader.
Upgrade economics
Why upgrade costs cannot be estimated linearly
Price grows exponentially while the reward grows almost linearly. The marginal-cost arithmetic that finds the tier where climbing stops being worth it, worked through on a real ladder.
How we choose what to build
What answers an AI cannot give
The dividing line between facts a summary answers in one line and answers that need your own numbers — and why only the second kind is worth building a page around.
Every tool on this site is documented against these three pages. If a tool ever contradicts them, the tool is wrong — tell us.