Collection
for Game Designers
Model collectible card and item systems with sets, duplicates, and completion tracking.
Define your collection system
Define your collection
Specify card rarities, drop rates, and total pool size.
Organize into sets
Group cards into expansions, seasons, or thematic sets.
Handle Duplicates
Configure what happens when players pull cards they already own.
Track your system
Link currencies to track your system in Architect mode.
Analyze Completion
View percentile curves, variance distributions, and session breakdowns.
Stop guessing at collection balance
Simulate your card collection or gacha system in minutes. See completion pacing, duplicate impact, and player variance — before you ship.
Start simulating for free