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Radioactive Mutation Event

2025-11-15

The Radioactive Mutation Event is a glowing limited-time update in Roblox's Steal a Brainrot, launched on November 15, 2025, at 3:00 PM EST, running until November 21, 2025. It bathes the map in neon green radiation, introducing the 8.5x income Radioactive Mutation, hourly Fishing Events for Aquatic Brainrots, a Brainrot Trader offering 3 exclusive brainrots (1 Mythic + 2 Secrets), a Radioactive Spin Wheel for secrets and gears, and the new Radioactive Index. Players fish with upgraded rods, exchange units at the Trader, spin for exclusives, and survive Admin Abuse chaos amid nuclear visuals and hazard symbols.

Key Statistics

event duration
One week (November 15-21, 2025)
start time
November 15, 2025 at 3:00 PM EST
peak concurrent users
Estimated 26-28 million during peak hours
+5 more statistics below

Complete Statistics

event duration
One week (November 15-21, 2025)
start time
November 15, 2025 at 3:00 PM EST
peak concurrent users
Estimated 26-28 million during peak hours
new brainrots introduced
3 (1 Mythic + 2 Secrets from Brainrot Trader)
aquatic brainrots total
25 (complete collection available through fishing)
fishing frequency
Every hour with minigame casts
trader restock
Every 2 hours for Brainrot exchanges
admin abuse frequency
Launch day full-scale with ongoing integrations

Event Mechanics

The Radioactive Mutation Event irradiates the map with green glows, nuclear reactors, hazard symbols, and neon lighting. Brainrots on the conveyor gain the Radioactive Mutation (8.5x earnings, green neon design) during active phases. The hourly Fishing Event floods the lobby into a sea; equip rods (Frozen 2x luck 2.5M, Fiery 3x luck 75M, Radioactive 4x luck 1B) to cast lines, triggering a bar-filling minigame to catch Aquatic Brainrots. There are 25 aquatic brainrots in the complete collection available through fishing, including previously retired aquatic brainrots that are worth trying to obtain. The Brainrot Trader NPC offers 3 exclusive brainrots (1 Mythic + 2 Secrets) available through exchanges, restocking every 2 hours. The Radioactive Spin Wheel spins periodically for currency, gears, boosters, and the Radioactive Secret Block. Completing the Radioactive Index unlocks base color customizations. Admin Abuse launches at 3:00 PM EST with glowing hazards, bonus spawns, and mutation drops.

Exclusive Rewards

🎁
Radioactive Mutationtrait

Neon green glowing design granting 8.5x earnings multiplier during event phases

🎁
Radioactive Secret Blockitem

Spin Wheel exclusive for random high-rarity Brainrot rolls

🎁
Fishing Roditem

Upgradable tool for hourly fishing minigames: Frozen (2x luck, 2.5M), Fiery (3x luck, 75M), Radioactive (4x luck, 1B). Fishing can catch all 25 aquatic brainrots in the complete collection, including previously retired ones worth trying

🎁
Neon Green Gearsitem

Cosmetic and utility gears from Spin Wheel, enhance base aesthetics

Available Brainrots (3)

Orcaledon
Orcaledon
Secret🏪 Brainrot Dealer
$40.0M/sec
Swag Soda
Swag Soda
Secret🏪 Brainrot Dealer
$13.0M/sec
Centrucci Nuclucci
Centrucci Nuclucci
Mythic🏪 Brainrot Dealer
$15.5K/sec

Tips & Strategies

💡
Join servers 1 hour before 3:00 PM EST launch to bypass queues and secure early mutation hunts on the conveyor
💡
Upgrade to the Radioactive Rod (1B) for 4x luck in fishing to snag Aquatic Brainrots faster, including previously retired aquatic brainrots worth trying to catch
💡
Check the Brainrot Trader every 2 hours for restocks—prioritize exchanging commons for the exclusive Mythic and Secrets
💡
Spin the Radioactive Wheel during low-pop times to avoid competition for Secret Block drops
💡
Focus stealing on bases with glowing green Brainrots during peak event hours for quick mutation acquisitions
💡
Complete the Radioactive Index by collecting all variants for permanent base color unlocks and bonuses
💡
Coordinate with groups during Admin Abuse to protect fished Brainrots from glowing hazards and theft

Trivia & Fun Facts

💎
The Radioactive Mutation is the first new mutation in weeks, breaking a content drought with its 8.5x boost and viral green aesthetic
💎
Launch day peaked at over 26 million concurrent users, surpassing previous records and straining Roblox servers briefly
💎
The hourly Fishing Event's sea lobby transformation caused initial glitches, patched within the first day by developers
💎
Swag Soda's meme design exploded in popularity, becoming the most traded Secret on community Discords post-launch
💎
Completing the Radioactive Index rewards a unique neon green base theme, celebrated for its cyberpunk vibe
💎
Admin Abuse featured 'nuclear meltdowns' hazards, wiping bases in hilarious chain reactions across streams
💎
The event's fishing minigame drew inspiration from classic arcade reels, with dataminers uncovering hidden rod upgrades early

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Event ID: radioactive-mutation-event