Cookie Run: Crumble
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A Guild Conquest simulator. It plays the whole fight with the game's own numbers, so you can try a lineup here before you spend a ticket on it.
Simulator
Pick 12 cookies, 3 pets and 2 mercenary cards and run the Guild Conquest fight a few hundred times. You need a free account.
DPS chart
Damage per second for every cookie from the game's skill data, with sliders for the team synergies.
Builds
Lineups people posted for Guild Conquest, bosses and dungeons. Upvote the ones that work.