Frequently Asked Questions

Got questions? We've got answers. Find solutions to common problems and learn more about game mechanics.

🎣 Gameplay

Are there any working codes for My Fishing Brainrots?
Yes! As of January 2026, there are 2 active codes: DISCY (1 Wheel Spin) and LUCKY (2x Luck Boost for 10 minutes). Use DISCY immediately for rewards, but save LUCKY for when you have enough cash to spam 50+ eggs from the Conveyor Belt. Visit our Codes page for the latest updates.
What's the rarest brainrot unit?
The Forgotten tier (0.0125% drop rate, ~1:8000 eggs) contains the rarest legitimate units. Gold Radioactive Tornado Swag ($48.75M → $1.24B @Lv50) and Meowron Zeno ($31M base) are the most sought-after. Divine/God tier units exist but are often admin-only or glitch-obtained. Check Tier List for all Forgotten units.
How does the Conveyor Belt work?
Eggs spawn on a physical moving belt that you can see before purchasing. Prices scale from $500 to $50K+ based on rebirth tier. You can upgrade Conveyor Speed (faster spawns) and Conveyor Luck (better rarities). Pro tip: Use LUCKY code when you have $500K+ saved to spam 50-100 eggs during the 10-minute 2x Luck boost.
What is Fish Index and why does it matter?
The Fish Index is your brainrot encyclopedia. Each unique brainrot you catch is added permanently. Completing full sections (Common, Rare, etc.) grants +5% global cash bonus that stacks across rebirths. With 10+ sections, you can get +50-70% total bonus. CRITICAL: These bonuses are multiplicative with rod/buff bonuses, not additive!
What does Rebirth do and what are Gatekeeper units?
Each rebirth requires (1) a specific cash amount AND (2) a specific Legendary "gatekeeper" unit. For example, Rebirth 1 needs $100K + Salamino Penguino. You lose all cash but gain permanent 2x-5x multipliers and unlock new floors. Gatekeeper units are CRITICAL - you CANNOT progress without finding them. See Mechanics page for full rebirth table.
Do brainrot units grow physically?
YES! Units physically grow in visual size as they level up. A Lv 1 unit is ~0.5x player height, while Lv 50 units become 3-4x player height (~25x size increase). This makes your island look crowded and acts as a "wealth flex" to visiting players. The growth correlates with their ~25x power scaling from Lv 1 to Lv 50.
What are Composite units?
Composite units are formed by combining multiple specific brainrots. For example, La Secret Combination = Hotspot + Tortoini + Toilet. Composites typically have much higher EPF values than individual components. The ultimate composite is L Grande ("Grande Combination"), required for Rebirth 9.
What's the $50 Trillion Matteo?
Matteo is the current endgame goal - a purchasable unit costing exactly $50 Trillion, unlockable at Rebirth 9. Reaching this requires a full team of maxed Mythical/Forgotten units (Diamond Lvakas, Avocado Owls, Gold Tornadoes at Lv 50). It represents hundreds of hours of grinding and marks you as an elite player.
What's the Rank Up system?
At Level 50+, you can "Rank Up" a unit, which RESETS it to Lv 1 but grants Tokens (premium currency). Tokens buy PERMANENT account buffs (Cash%, Rod%, Conveyor Speed%) that NEVER reset through rebirths. This creates a cycle: level units to 50 → rank up → get tokens → buy permanent buffs → repeat.

⚙️ Technical

Codes are not working
Codes are case-sensitive. Make sure you copy them exactly. Also, codes can expire without notice. If a code says "Invalid," it has likely expired.
I lost my data/stats
Data loss is rare but can happen. Join the official Discord server (linked in footer) and open a support ticket with proof of your stats if possible.
Is cross-trading allowed?
No, cross-trading (trading game items for real money or items in other games) is strictly prohibited and will result in a permanent ban.