Formulas
How hit chance, debuffs, crits, defence, Skill Haste, damage and growth stats are worked out. Put in your own numbers.
Hit chance
Attacker
Target
Formula
- Hit chance = Accuracy ÷ Evasion + Accuracy Rate − Evasion Rate, between 0% and 100%
- Evasion 0 or lower: every hit lands. Hits that only push never miss.
Evasion only matters against cookies: the Guild Conquest boss has Accuracy 100,000.
Debuff chance
Skill
Space Doughnut's Royal Excellence
Target
Duration
Lasts 2s
Formula
- Chance per roll = base chance × (Focus ÷ Resistance + Focus Rate − Resistance Rate), up to 100%
- Per cast = 1 − (1 − chance) ^ rolls
- Bosses and elites: crowd control never lands; debuffs still roll.
- Duration = base × (1 + Duration synergy). Skill AMP does not change it.
Every cookie starts at 100 Focus and 100 Resistance, +2 per star. Focus is worth most on low base chances.
Critical hits
Formula
- Crit = CRIT% − target CRIT RES. Every full 100% is a sure crit stack; the rest is the chance of one more.
- A hit deals × (1 + stacks × CRIT DMG)
- Average = 1 + CRIT DMG × (CRIT% − CRIT RES)
CRIT RES comes off first: against 150% CRIT RES the first 150% CRIT% does nothing. Past 100% every point still adds.
Defense and damage taken
Target
Element
Element chart
| Attacker ↓ · Target → | Fire | Water | Grass | Light | Dark |
|---|---|---|---|---|---|
| Fire | ×1 | ×1 | ×1.15 | ×1 | ×1 |
| Water | ×1.15 | ×1 | ×1 | ×1 | ×1 |
| Grass | ×1 | ×1.15 | ×1 | ×1 | ×1 |
| Light | ×1 | ×1 | ×1 | ×1 | ×1.15 |
| Dark | ×1 | ×1 | ×1 | ×1.15 | ×1 |
Formula
- DEF factor = 1 ÷ (1 + ln(1 + DEF ÷ 500))
- DEF shred = DEF × (1 − shred); a target keeps only the strongest shred
- DMG Reduction sources: 1 − (1 − a) × (1 − b) × …, never 100%
- Element edge: × (1.15 + Elemental DMG). Fire > Grass > Water > Fire; Light and Dark beat each other. No penalty the other way.
Each DEF point is worth a little less than the one before. A 20% DMG Reduction source always adds 25% effective HP, however many you already have.
Skill Haste
Formula
- Cooldown = base × 100 ÷ (100 + Skill Haste)
- First cast = cooldown × (1 − Skill Prep), or when the cookie reaches a target if that is later
- Casts per second = (100 + Skill Haste) ÷ (100 × base)
Skill Haste has no falling returns: every point adds 1% of the base cast rate. Only the breakpoints in a fixed-length fight are steps.
What each stat multiplies
Target
Guild Conquest boss: DEF 2,000, Dark; its DMG Reduction grows each phase.
Cookie
ATK layers
Stats from growth
Formula
- Stat = base × (1 + level bonus), rounded down, then × (1 + star bonus), rounded down
- Per star: ATK and HP +5% to +10% by rarity, compounding; DEF +2%; Accuracy, Evasion, Focus and Resistance +2; CRIT% +0.5%; CRIT DMG +1%
Gear, runes, pets and the rest come on top of these numbers.