What is the rarest Brainrot?

Currently, the OG rarity is the highest, surpassing Secret. Examples typically include event-specific Brainrots.

How do I get Brainrots?

You can purchase them from the conveyor or steal them from other players' bases if they are unlocked.

What is Steal a Brainrot?

Steal a Brainrot is a thrilling Roblox game by BRAZILIAN SPYDER where you collect brainrots, build wealth, and compete on the leaderboard.

How does the fusion system work?

You can use the Fuse Machine to combine two brainrots and create new, rarer brainrots. Special fusion machines like Santa's Fuse and Witch Fuse offer unique combinations.

Fortunu and Cashuru

Secret

LEPRECHAUN LUCKY BLOCK

Base Cost

$55.0B

Price Format:

• K = 1,000

• M = 1,000,000

• B = 1,000,000,000

• T = 1,000,000,000,000

Income per Second

$130.0M

Price Format:

• K = 1,000

• M = 1,000,000

• B = 1,000,000,000

• T = 1,000,000,000,000

Efficiency

0.24%

Event

St Patricks Event

Fortunu and Cashuru is a Secret-tier Brainrot in Steal a Brainrot and a live Leprechaun Lucky Block drop from ST PATRICKS. It uses a paired design made from a green clover figure and a gold coin figure with dollar-sign eyes and a cash-note tongue, so the duo reads clearly as two separate lucky-money mascots. Fortunu and Cashuru matters because it is the rarest listed drop in the event block and now sits at the top of the ST PATRICKS lucky-block economy.

Secret brainrot generating $130.0M/second

Fortunu and Cashuru is live in the Leprechaun Lucky Block pool during ST PATRICKS in Update 42. The block can be bought from the Runway / Red Carpet for 400M Cash, bought as a Premium Leprechaun Lucky Block from the Robux Shop for 649 Robux or 1,947 Robux for 3 (includes mutation), or spawned naturally after collecting 50 coins.

Visual Structure

Prototype

Structured prototype tags extracted from the brainrot's identity and visual design.

CloverCoinCash

Composition

Duo

Composed of 2 entities

Current site art shows two separate entities, but no canonical component ids are published yet.

Collection Tip: This character contains 2 entities. Collect Fortunu and Cashuru to boost your progress!

How to Obtain

LUCKY BLOCK

Obtained by opening Lucky Blocks.

Source: Leprechaun Lucky Block

All Lucky Block →

Purchase

Open the Leprechaun Lucky Block during ST PATRICKS for a chance to obtain Fortunu and Cashuru. The current block evidence lists Runway / Red Carpet purchase for 400M Cash, Premium Robux Shop purchase for 649 Robux or 1,947 Robux for 3 (includes mutation), or a natural spawn after collecting 50 coins.

Steal

Steal Fortunu and Cashuru from active bases after another player opens the event lucky block and places it.

Pro Tips

Prioritize Fortunu and Cashuru when you want the rarest listed duo hit in the ST PATRICKS lucky block lineup, because it now leads the event pool at $55.0B value and $130.0M/s income.

Mutation Income Calculator

Select Mutation

Time Period

Income with Default mutation

468.0B/h

Base: $468.0B/h → +0%

View all mutations at hourly rates

Mutation	Mult	Income
Default	1x	$468.0B
Gold	1.25x	$585.0B
Diamond	1.5x	$702.0B
Rainbow	10x	$4.6T
Bloodrot	2x	$936.0B
Celestial	4x	$1.8T
Candy	4x	$1.8T
Lava	6x	$2.8T
Galaxy	6x	$2.8T
YinYang	7.5x	$3.5T
Radioactive	8.5x	$3.9T
Cursed	9x	$4.2T
Divine	10x	$4.6T

Release Status

Released

Released during ST PATRICKS in Update 42 on March 14, 2026. Current public naming resolves to Fortunu and Cashuru, although some legacy page body fields still use the older Coinuru spelling. The live stat line is $55.0B value and $130.0M/s income.