🧠Steal a Brainrot

Complete Fuse Machine Analysis: Probability Distribution & Fusion Strategy Guide

625 words4 min read07/10/2025

Deep dive into Fuse Machine mechanics with comprehensive probability analysis and strategic recommendations for obtaining desired fusion brainrots

Introduction

The Fuse Machine in Steal a Brainrot is a newly added system where players combine up to 4 brainrots to create new, potentially more valuable characters. Understanding the Fuse Machine mechanics and probability distributions is crucial for maximizing your chances of obtaining high-tier brainrots.

Time Tiers

Fusion time is divided into fixed time tiers:

  • 15 minutes: Lowest tier combinations
  • 30 minutes: Mid-tier combinations
  • 1 hour 30 minutes: Highest tier combinations

Mutation Impact Analysis Table

Research on how mutations affect probability improvements

CombinationSecretBrainrot GodMythicLegendaryEpicRareCommonCostTime
4 Secret (4 Default)54%35%11%N/AN/AN/AN/A$62.5M1h 30min
4 Secret (3 Default + 1 Gold)54%35%11%N/AN/AN/AN/A$78.2M1h 30min
4 Secret (3 Default + 1 Diamond)55%36%9%N/AN/AN/AN/A$235M1h 30min
4 Secret (2 Default + 2 Gold)58%38%4%N/AN/AN/AN/A$313M1h 30min
4 Secret (2 Default + 2 Diamond)54%35%11%N/AN/AN/AN/A$100M1h 30min
4 Secret (2 Gold + 1 Diamond)59%38%3%N/AN/AN/AN/A$1.2B1h 30min
4 Secret (3 Default + 1 Gold)54%35%11%N/AN/AN/AN/A$62.5M1h 30min
4 Secret (2 Default + 1 Gold + 1 Diamond)54%35%11%N/AN/AN/AN/A$62.5M1h 30min
4 Brainrot God (1 Diamond)6%54%40%N/AN/AN/AN/A$11.7M1h 30min
4 Mythic (2 Gold + 2 Diamond)N/AN/AN/A11%20%69%N/A$1.1M30min
4 Legendary (No Mutations)N/AN/AN/A14%26%60%N/A$183K30min
4 Epic (1 Diamond)N/AN/AN/A14%26%60%N/A$23.5K30min
4 Epic (1 Gold)N/AN/AN/A18%35%47%N/A$31.3K30min
1 Common + 1 Rare + 1 Epic + 1 Legendary (2 Gold)N/AN/AN/A17%34%49%N/A$88.5K30min
4 Rare (2 Lava)N/AN/AN/AN/A11%69%20%$5.9K15min
4 Common (No Mutations)N/AN/AN/AN/A13%62%25%$1.6K15min
4 Common (2 Gold)N/AN/AN/AN/A9%43%48%$86815min

Rarity Impact Analysis Tables

Research on how input rarity affects probability distributions

High-Tier Fuse Machine Combinations

CombinationSecretBrainrot GodMythicLegendaryEpicRareCommon
4 Secret54%35%11%N/AN/AN/AN/A
2 Secret + 2 Brainrot God30%25%45%N/AN/AN/AN/A
3 Secret + 1 Brainrot God44%31%25%N/AN/AN/AN/A
4 Brainrot God6%48%46%N/AN/AN/AN/A
3 Brainrot God + 1 Secret13%34%33%N/AN/AN/AN/A

Mid-Tier Fuse Machine Combinations

CombinationSecretBrainrot GodMythicLegendaryEpicRareCommon
3 Mythic + 1 Brainrot GodN/A15%42%43%N/AN/AN/A
4 MythicN/AN/AN/A14%27%59%N/A
2 Epic + 2 LegendaryN/AN/AN/A14%26%60%N/A
4 LegendaryN/AN/AN/A14%28%58%N/A

Mixed Rarity Fuse Machine Combinations

CombinationSecretBrainrot GodMythicLegendaryEpicRareCommon
1 Common + 1 Epic + 1 Legendary + 1 MythicN/AN/AN/A12%22%66%N/A
1 Common + 1 Rare + 1 Epic + 1 LegendaryN/AN/AN/A17%34%49%N/A
2 Rare + 1 Epic + 1 LegendaryN/AN/AN/A17%33%50%N/A

This guide is based on current game mechanics and may be updated as the game evolves. Always verify current probabilities in-game before making expensive fusion decisions.