Gacha pity calculator

Editorial desk · 2026-10-21 · data d2dfaee739

gacha.js sets base rarity rates to 45 / 30 / 17 / 6.5 / 1.5 percent, with nine separate regional pity counters. The counter increments before each draw: after 69 consecutive non-five-star results on one banner, the 70th pull is guaranteed five-star and resets that banner's counter. It does not guarantee a particular species. The calculator derives each banner's real five-star pool from pokedex.js and sprite eligibility.

Ten-pulls are not ten identical independent draws. If their first nine results contain no four- or five-star, the final slot rolls only four- and five-star with renormalized weights: 81.25% and 18.75%. Hard pity takes priority. The exact state calculation tracks the counter and whether the current ten-pull already contains an epic; it reports finite-pull target probability and expected counts. Species results assume no owned-shiny rerouting; actual collection-dependent rerolls are outside this model. Mean waiting time is labeled for single-pull play, not ten-pull batches.

Rates and pool selection are from official js/systems/gacha.js, not just the older GDD. Snapshot version d2dfaee739, Git commit 3c9641c9e782cf74afbde490f39cd60adf59e32b, checked 21 October 2026. Inputs stay on this page and do not spend tickets, read a save or contact the game.