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Sol's RNG (sols rng) Calculator

Sol's RNG guide topics

Sol's RNG Biomes and Breakthrough GuideBiomes are timed game states that can change which Auras are realistic chase targets. Use biome odds as planning context, then check the calculator or rolling simulator before spending potions or long roll sessions.Sol's RNG Rarest Auras and Best Aura GuideThe rarest Aura is not always the best Aura for every player. A useful target depends on rarity, native biome chance, visual preference, progress goals, and how many rolls you can realistically commit.Sol's RNG Script and Macro Safety GuideDo not download or run Sol's RNG scripts from random pages. Safer planning means using in-game settings, probability tools, roll-speed estimates, and simulator practice without automation downloads or bypass instructions.Sol's RNG Merchant and Private Server GuidePrivate servers can make planning quieter and more predictable, but they do not turn rare Auras into guaranteed drops. Treat merchant timing, potion choices, and roll goals as planning inputs, then compare them against probability tools before committing long sessions.Sol's RNG Books GuideBooks should be planned like any other progression resource: define the target, estimate the roll or resource cost, and check whether the payoff changes your real Aura odds enough to matter for your next chase.What Is a 1 in 7.5B Aura in Sol's RNG?A 1 in 7.5B Aura means the single-roll chance is extremely small. It does not mean you are guaranteed to hit after 7.5 billion rolls; it means each roll is an independent chance, so cumulative probability grows slowly and variance stays brutal.

Core Concepts

Sol's RNG Official Probability Formula

Aura Probability = Total Luck / Aura Base Rarity

⚠️ Important Limit: Maximum probability cannot exceed 50%

Luck Configuration Guide

Basic Buffs

Source: Equipment, potions and regular buffs

Example: Volcanic Device +290%, input 290

Special Buffs

Source: Heaven Potion and special items

Note: Not affected by bonus multiplier

Bonus Multiplier

Source: 2x reward every 11 attempts mechanism

Default: 2x, only active during bonus rounds

VIP Multiplier

Source: VIP membership bonus

Common value: 1.2x, affects all luck bonuses

Bonus Round Toggle

Determines whether to apply bonus multiplier

Suggestion: Enable when calculating bonus rounds

Aura Selection Guide

Preset Auras

  • • Contains 100+ in-game auras
  • • Display format: Aura Name (1 in rarity)
  • • Uses in-game English names
  • • Automatically includes biome multipliers

Custom Auras

  • • Suitable for: New auras, special cases
  • • Required input: Name, base rarity
  • • Optional: Biome multiplier
  • • Flexible configuration of any parameters

Calculation Parameters

  • • Attempts: Used for cumulative probability calculation
  • • Target probability: Calculate required attempts
  • • Supports precision up to 3 decimal places

Result Interpretation

Single Attempt Probability

Probability of getting the aura in each attempt

Display: Percentage + "1 in X" format

Cumulative Probability

Probability of getting at least one in specified attempts

Formula: 1 - (1 - single probability)^attempts

Required Attempts

Number of attempts needed to reach target probability

Used for resource planning

Aura Information

Shows base rarity and biome multipliers

Helps understand aura acquisition difficulty

Practical Usage Example

Scenario: Calculate probability of getting Rare aura

Step1Set luck configuration
Basic Buffs: 290 (Volcanic Device) | VIP Multiplier: 1.2 | Bonus Round: On
Step2Select aura: Rare (1 in 16)
Step3Set parameters: 1000 attempts, target 50% probability
Calculation Result
Total Luck: (1 + 2.9) × 2 × 1.2 = 9.36
Single Probability: 9.36 / 16 = 58.5% → Limited to 50%
1000 attempts cumulative probability: Nearly 100%

Important Tips

50% Probability Cap: Game mechanism limits any aura's single attempt probability to 50%

Special Buffs Independence: Special buffs are not affected by bonus multiplier but are affected by VIP multiplier

Biome Multipliers: Some auras have additional rarity multipliers in specific biomes

Official Mechanics: This calculator is based on official game mechanics, more accurate than traditional probability calculations