Be a Lucky Block Rarity System

Be a Lucky Block uses an 11-tier rarity system that determines the quality and cash output of both Lucky Blocks and Brainrots. From Common (lowest) to Cyber (highest), each tier represents a significant jump in power and value.

How Rarity Affects Gameplay

Rarity is the single most important quality metric in Be a Lucky Block. It applies to both Lucky Blocks (which determine your Luck stat) and Brainrots (which determine your passive cash generation). Higher rarity universally means better performance.

For Lucky Blocks, rarity correlates directly with the Luck stat. Common blocks have x1 Luck, while the Cyber-rarity Twoface Block has x11 Luck. Higher Luck means better chances at receiving rare Brainrots during runs.

For Brainrots, rarity determines the cash per second rate when placed on your base. A Cyber-rarity Brainrot generates dramatically more cash than a Common one. This is why targeting the highest possible rarity during runs is the key to progression.

The CYBER tier was the most recent addition, introduced in the Zeus Update on March 21, 2026. Before this update, Cosmic was the highest rarity tier. CYBER-rarity Brainrots can only be obtained by reaching Knight's Base with sufficient Luck.

The 11 rarity tiers from Common (gray) to Cyber (neon green)

All 11 Rarity Tiers

Common

Associated Block: Player Skin (x1)

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The starting rarity tier. Common Brainrots are the most frequently obtained and produce the lowest passive cash. Every player begins with Common-level drops using the default Player Skin Lucky Block.

Uncommon

Associated Block: Fairy Block (x2)

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A slight step up from Common. Uncommon Brainrots generate noticeably more cash but are still relatively easy to obtain. The Fairy Block at x2 Luck consistently produces Uncommon drops at closer NPC bases.

Rare

Associated Block: Freezy Block (x3)

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Rare Brainrots represent the first significant income jump. The Spirit Lucky Block (x6 Luck, free from Discord) produces Rare-tier drops more consistently than the Freezy Block, making it an excellent early game choice.

Epic

Associated Block: Lava Block (x4)

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Epic Brainrots offer strong passive cash generation. This is the tier where event Brainrots start appearing (lowest Zeus and Devil event Brainrots are Epic). The Lava Block at x4 Luck starts producing Epic drops at mid-range bases.

Legendary

Associated Block: Glitched Block (x5)

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Legendary Brainrots are a major milestone. Multiple Zeus and Devil event Brainrots sit at this tier. The Glitched Block at x5 Luck combined with reaching further bases makes Legendary drops achievable.

Mythic

Associated Block: Void Block (Rebirth 1)

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The first post-Rebirth rarity tier. Mythic Brainrots include powerful event drops like Olympini Godini (Zeus) and Dojonini Assassini (Admin). Unlocking the Void Block through Rebirth 1 opens access to Mythic-tier drops.

Eternal

Associated Block: Cyborg Block (Rebirth 2)

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Eternal Brainrots are rare and valuable. The Cyborg Block from Rebirth 2 starts producing Eternal drops at further NPC bases. These Brainrots provide substantial passive income when placed on your base.

Divine

Associated Block: Divine Block (Rebirth 3)

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Divine rarity marks entry into the elite tiers. Divine Brainrots are hard to obtain consistently but offer excellent cash generation. The Divine Block from Rebirth 3 is needed to target this tier reliably.

Secret

Associated Block: Inferno Block (Rebirth 4)

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Secret Brainrots are among the rarest standard drops. Both the Zeus and Devil event collections include Secret-tier Brainrots as their rarest entries. Magiani Tankiani (Admin) also sits at this tier.

Cosmic

Associated Block: Colossus Block (Rebirth 5)

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Cosmic is the second-highest rarity tier. I2perfectini Foxinini, the strongest Brainrot in the game (+140%), is Cosmic rarity. The Colossus Block from Rebirth 5 and Luminous Block are both Cosmic-tier blocks.

Cyber

Associated Block: Twoface Block (Rebirth 8)

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The newest and highest rarity tier, added in the Zeus Update. Cyber Brainrots are obtained by reaching Knight's Base with high Luck. The Twoface Block (x11 Luck, Rebirth 8) is the only Cyber-rarity Lucky Block.

Rarity Progression Path

Your rarity progression in Be a Lucky Block follows this general path. In the early game, most drops will be Common through Rare. As you upgrade your Lucky Block and invest in speed upgrades to reach further bases, you start seeing Epic and Legendary drops more frequently.

The Rebirth milestones at levels 1 through 8 unlock Lucky Blocks in the Mythic through Cyber rarity range. Each Rebirth-unlocked block gives you consistent access to its rarity tier and below. The Twoface Block at Rebirth 8 is the current endgame, providing access to all rarity tiers including Cyber.

Event Brainrots span from Epic to Secret rarity, while Admin Brainrots range from Mythic to Cosmic. These event-exclusive drops often have higher cash bonuses than their standard counterparts at the same rarity tier, making events particularly valuable for progression.

CYBER - The Newest Rarity

CYBER Rarity

Tier 11 | Added in Zeus Update (March 21, 2026)

CYBER is the highest rarity tier in Be a Lucky Block. It was added alongside the Zeus Update and is exclusively associated with the Twoface Block and Knight's Base. CYBER-rarity Brainrots are obtained by reaching Knight's Base with the Twoface Block or similarly high-Luck block equipped.

The neon green color of CYBER rarity makes it instantly recognizable. When you see a CYBER-rarity Brainrot on someone's base, you know they have reached Rebirth 8 and are farming the furthest NPC base in the game. It is the ultimate status symbol for progression.

CYBER rarity, the newest and most powerful tier in the game