Curious about how to get Diamond Base in Steal a Brainrot? This exclusive base variation is one of the rarest rewards in the game, featuring a diamond-themed design and a valuable multiplier boost. Unlocking it requires completing the Diamond Index, which involves collecting all Diamond Mutation units. This guide explains how the system works, why it’s so difficult, and the best tips to reach this milestone.
What Is the Diamond Base in Steal a Brainrot?
The Diamond Base is a premium base skin covered in diamond details. Beyond its appearance, it also provides a 0.5x Base Multiplier, making your base stronger and more efficient. Unlike cosmetic-only upgrades, the Diamond Base offers both prestige and gameplay benefits.
However, it can’t be bought or traded—you must earn it by completing the Diamond Index, a collection challenge that requires grinding some of the rarest units in the game.
How to Unlock Diamond Base
Unlocking the Diamond Base is tied to the Index system.
Completing the Diamond Index
To earn the Diamond Base, you must complete the Diamond Index by collecting all 92 non-event-limited units in their Diamond Mutation form. This is a massive undertaking due to the rarity of Diamond units.
Requirements for Diamond Mutation Units
Diamond Mutations are not separate pets you can buy—they are rare spawns that occasionally appear on the conveyor belt or inside other players’ bases. Even when found, stealing them can be a challenge since most bases are heavily fortified against raids.
Because of this, finishing the Diamond Index is considered one of the hardest tasks in Steal a Brainrot.
Index System and Rewards Explained
The Index system works like a collectible catalog, showing silhouettes of all Brainrot units. When you acquire a unit, its entry is added to your Index. Completing each tier grants unique rewards and multipliers:
Basic Index
Reward: 0.5x Base Multiplier
Gold Index
Reward: Additional multiplier + Gold Base
Diamond Index
Reward: Additional multiplier + Diamond Base
Rainbow Index
Reward: Additional multiplier + Rainbow Base
This system was introduced in Update 5 (June 28, 2025), giving players long-term goals beyond regular farming. Among all tiers, the Diamond Index is considered the most grind-heavy due to rarity.
Why Diamond Units Are Hard to Find
Diamond Mutations are extremely rare. Their spawn rates on the conveyor belt are incredibly low, and spotting them in enemy bases is uncommon. Even if you do find one, opponents often build tight defenses, making theft risky.
The rarity is intentional—Diamond units are designed as endgame goals for dedicated players, ensuring that completing the Diamond Index and unlocking the Diamond Base feels like a true achievement.
Best Tips to Complete the Diamond Index
Focus on Diamond Mutations – Always prioritize rare spawns when watching the conveyor belt.
Scout enemy bases carefully – Look for opportunities to steal Diamond units, but avoid wasting time on heavily fortified layouts.
Complete other Index tiers first – Finishing Basic and Gold Indexes gives you extra multipliers that help with progression.
Prepare for long-term grinding – The Diamond Index is not a quick goal. Expect extended play sessions and a reliance on luck.
Stay patient and consistent – Progress is slow, but persistence is the only way to gather all 92 Diamond units.
Conclusion
Learning how to get Diamond Base in Steal a Brainrot means committing to one of the game’s toughest challenges: completing the Diamond Index. By collecting all 92 Diamond Mutation units, you’ll unlock the exclusive Diamond Base and a 0.5x Base Multiplier boost. While the grind is long and heavily luck-based, the reward is one of the most prestigious achievements in the game, both visually and mechanically.