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Customizable Gacha Simulator (w/ Monte Carlo Simulation) v0.0.1

Banner Drop Rates

5★ Base Rate: %
4★ Base Rate: %
3★ Base Rate: %
5★ Rate-Up Distribution: %
4★ Rate-Up Distribution: %

Banner Item Pool

5★ Rate-Up Items:
4★ Rate-Up Items:
5★ Non-Rate-Up Items:
4★ Non-Rate-Up Items:

Banner Rules

Banner Pull Cost

Cost per Pull: $

Monte Carlo Simulation

Simulation Results

Click "Run Simulation" to get started.

Guide for Dummies:

  • Base Rate: Chance to pull a 5★/4★ item
  • Rate-Up Distribution: Chance to get a Rate-Up item upon pulling a 5★/4★ (50/50, 75/25 system)

  • Rate-Up Items: Specific "Featured" Items on a banner, typically with a higher rate-up
  • Non-Rate-Up Items: Non-Featured Items on a banner, general pool you "lose" to

  • Hard Pity System: Guarantees a 5★/4★ item if item hasn't been pulled yet
  • Hard Pity Cap: Exact pull number that guarantees an item
  • Guarantee Rate-Up After: Guarantees a Rate-Up item after losing to Non-Rate-Up X amount of times

  • Soft Pity System: Increases chances of getting the 5★/4★ item that hasn't been pulled yet
  • Soft Pity Threshold: Exact pull number when the rate starts increasing
  • Soft Pity Increment: How much the rate increases each pull past the threshold

  • Sparking System: Enables free pick-up of item at a certain pull amount (does not affect pity logic) [5★ Rate-Up only for now]
  • Pull Requirement: Number of pulls to "spark" or get an item [5★ Rate-Up only for now]

  • Cost per Pull: Conversion of IRL money to pulls (based on Highest Top-Up)

  • Other Notes: 3★ Base Rate, 5★/4★ Non-Rate-Up Items are disabled/uneditable (for now).