Sourcemined
Slay the Spire 2
Verified on build 23811903

Potions, ? rooms and shop prices

The hidden running chances behind a run: when the next potion drops, what an unknown room becomes, and what the shop will charge.

Potion after a fight

The chance starts at 40%, goes down 10 points every time a potion drops and up 10 points every time one doesn't, so a dry streak always ends. Elites add 12.5 points to their own roll. A dropped potion is common 65%, uncommon 25% and rare 10% of the time.

Next fight

40%

52.5% if it's an elite

Log a fight
  1. No fights logged: the run starts at 40%.
Next fight
40%
Fight +2
42%
Fight +3
43.6%
Fight +4
44.9%
Fight +5
45.9%

Later fights assume regular fights and include every way the fights in between can go.

What a ? room turns into

Each "?" room first checks for a fight, then a treasure, then a shop, each with its own running chance (10%, 2% and 3% to start). Whatever comes up goes back to its starting chance and the others grow by theirs, so the longer you go without a shop, the likelier the next "?" is one. Otherwise it's an event. The chances below are for the n-th "?" room of an act, over every way the earlier ones can go.

"?" roomEventFightShopTreasure
1st85%10%3%2%
2nd71.1%19%5.91%3.96%
3rd60.3%25.3%8.56%5.8%
4th53.5%28.3%10.8%7.46%
5th49.9%28.6%12.6%8.88%
6th48.3%27.8%13.8%10%

Assumes the running chances start fresh in the act. A profile's very first run has fixed first "?" rooms.

Shop prices

Cards

RarityPriceColourlessOn sale
Common48–5354–6024–26
Uncommon71–7982–9035–39
Rare143–158164–18271–79

One card per shop is on sale at half price.

Relics and potions

RarityRelicPotion
Common149–20148–53
Uncommon191–25971–79
Rare234–31695–105
Shop relic170–230—

Relics from treasure rolls are common 50%, uncommon 33%, rare 17%.

Card removal

Removals boughtNext oneAscension 6+
075100
1100150
2125200
3150250
4175300
5200350

Gold per fight

FightGoldAscension 3+
Regular fight10–207–15
Elite35–4526–33
Boss10075

Prices vary randomly inside each range (±5% for cards and potions, ±15% for relics). Rules are on the methodology page.