Steal a Brainrot is a chaotic tycoon/PvP simulator on Roblox developed by BRAZILIAN SPYDER (under Do Big Studios™) with collaborators SpyderSammy and do_small. Launched on May 15, 2025, it has become one of Roblox’s biggest experiences, with over 66.47 billion visits, 27.5 million favorites, and peaks of 24+ million concurrent players across platforms (Roblox record-breaker). Current concurrent players typically range from 163K–265K. It blends passive income generation, aggressive stealing, base defense, and meme-fueled progression in a single 8-player server map.
Core Gameplay Loop & Mechanics
You spawn into one of 8 personal bases surrounding a central hub. Brainrots placed in your base generate cash per second (higher rarity + mutations/traits = exponentially more income). Use cash to buy more Brainrots, gears, and progress via rebirths. The game emphasizes risk/reward: steal from unlocked bases to accelerate, but defend your own or lose everything to thieves.
Bases:
- Start with a red laser gate (only you + friends/connections can pass).
- Auto-locks for 30 seconds on join (extendable with rebirths: +10 sec per rebirth).
- Multiple floors unlock (2nd floor at Rebirth 2, 3rd at Rebirth 10) for safer storage.
- Brainrot slots start limited and scale with rebirths (max ~27+ at high rebirths).
- Brainrots can be moved between slots post-2025 updates.
Cash Generation:
- Brainrots auto-produce $/s while in base.
- Formula: TotalIncome = BaseIncome × (1 + MutationModifier + Σ TraitModifier_i).
- Sell price ≈ half purchase price (strategic for funding rebirths).
Stealing Mechanics (step-by-step):
- Enter an unlocked enemy base.
- Pick up a Brainrot → you slow down, drop all gears/tools, owner is alerted.
- Carry it back to your base (adds instantly to a slot on success).
- While carrying: vulnerable to attacks; if hit enough or killed, Brainrot teleports back to original owner.
- High risk/high reward — perfect for snowballing but leaves you exposed.
Defending:
- Lock base (cooldown increases with rebirths).
- Use gears to trap, stun, fling, or auto-shoot thieves.
- Friend permissions for safe sharing.
- Higher floors make stealing harder.
Tutorial Flow:
- Spawn with 100 cash.
- Buy starter Brainrot (e.g., Noobini Pizzanini) from central red conveyor.
- It walks to your base and starts generating.
- Steal to accelerate or rebirth for permanent upgrades.
Brainrots (The Heart of the Game)
Total: 382 indexable + 14 miscellaneous = 396 Brainrots. These are meme-style Italian Brainrot characters (food/animal/chaotic hybrids). They are the main collectibles, income sources, and rebirth requirements.
Rarities (organized by spawn rate, cost, and $/s):
| Rarity | Count | Spawn Chance/Notes | $/s Range | Cost Range | Notable Examples |
|---|---|---|---|---|---|
| Common | 11 | 55% on conveyor | $1–$14/s | $25–$1.7K | Noobini Pizzanini (worst earner), Pipi Corni |
| Rare | 11 | Very common | $15–$75/s | $2K–$9.7K | Trippi Troppi, Pinealotto Fruttarino |
| Epic | 20 | Common but less than Rare | $75–$325/s | $10K–$47.5K | Cappuccino Assassino, Mummio Rappitto |
| Legendary | 24 | Harder than Epic | $200–$1.9K/s | $35K–$347.5K | Burbaloni Loliloli to Seraphino Gruyero |
| Mythic | 33 (incl. Mythic LB) | ~10% chance | $2K–$19K/s | $350K–$5.5M | Frigo Camelo, Cocofanto Elefanto |
| Brainrot God | 74 | Semi-rare (name announced) | $19K–$315K/s | $5M–$75M | Cocofanto Elefanto to Dumborino Miracello |
| Secret | 100+ | Extremely low (server luck/admin) | $315K–$400M/s | $50M–$400B | La Vacca Saturno Saturnita (formerly top), Griffin, Hydra Bunny |
| OG | 4 | Rarest (admin-spawnable only in practice) | $450M–$750M/s | $450B–$750B | Strawberry Elephant ($750M/s), Meowl, Headless Horseman, Skibidi Toilet |
Obtainment Methods:
- Central Red Conveyor: Main hub spawn (dynamic pricing if contested).
- Stealing from others.
- Lucky Blocks (Normal, Mythic, Brainrot God, Secret, Admin, event-themed like Spooky/Festive).
- Machines (Fuse → Craft → Witch Fuse; some retired).
- Events/Admin Abuse: High-tier spawns, rituals.
- Trading (unofficial plaza).
- Robux/DLC or limited merch-linked.
- Special: OG Brainrots unlock exclusive base skins (lost if stolen).
Mutations & Traits (stackable multipliers):
- One mutation per Brainrot (changes appearance + income modifier).
- Multiple traits possible (additive modifiers).
- Best: Rainbow (9x) & Divine (9x). Upcoming: Cyber (11x) on Apr 18, 2026.
- Full permanent list: Default (1x), Gold (1.25x), Diamond (1.5x), Rainbow (9x).
- Limited/event: Bloodrot (2x), Candy (4x), Lava (6x), Galaxy (7x), Yin Yang (7.5x), Radioactive (8.5x), Cursed (9x), Divine (9x).
- Collecting all obtainable Brainrots of one mutation unlocks a unique base color.
- Formula example: Base $1M/s + Diamond (0.5) + traits (Extinct 3 + UFO 2) = $6.5M/s total.
Top earner (as of late March 2026): Strawberrelli Flamingelli. Worst: Noobini Pizzanini.
Rebirth System (Main Progression)
Rebirth resets cash + Brainrots but unlocks better gears, multipliers, slots, and lock time. Keep gears permanently. Brainrots heading to base return to conveyor; carried Brainrots disappear if owner rebirths.
Full Rebirth Table (current as of April 2026; requirements have been adjusted multiple times):
| Rebirth | Required Cash | Required Brainrot(s) | Multiplier | Cash Bonus | Lock +10s | Slot +1 | New Gears/Abilities |
|---|---|---|---|---|---|---|---|
| 1 | $500K (was 1M) | Trippi Troppi + Gangster Footera (was Tung Tung Tung Sahur) | x0.5 | $5K | Yes | None | Friend Controller, Iron Slap, Gravity Coil, Bee Launcher |
| 2 | $1.5M (was 3M) | Boneca Ambalabu + Brr Brr Patapim | x1 | $10K | Yes | Yes (2nd floor) | Gold Slap, Coil Combo, Rage Table |
| 3 | $12.5M (was 7.5M) | Trulimero Trulicina + Chimpanzini Bananini | x2 | $25K | Yes | Yes | Diamond Slap, Grapple Hook, Taser |
| 4 | $35M (was 25M) | Chef Crabracadabra + Glorbo Fruttodrillo | x3 | $50K | Yes | Yes | Emerald Slap, Invisibility Cloak, Boogie Bomb |
| 5 | $100M | Frigo Camelo + Orangutini Ananassini | x4 | $100K | Yes | Yes | Ruby Slap, Medusa’s Head |
| 6 | $350M | Bombardiro Crocodilo | x5 | $250K | Yes | Yes | Dark Matter Slap, Web Slinger |
| 7 | $1B | Bombombini Gusini | x6 | $500K | Yes | Yes | Flame Slap, Quantum Cloner, All-Seeing Sentry |
| 8 | $5B | Te Te Te Sahur (was Cocofanto Elefanto pre-RB14) | x7 | $1M | Yes | Yes | Nuclear Slap, Rainbowrath Sword |
| 9 | $12.5B (was 25B) | Cocofanto Elefanto (was Girafa Celestre/Tralalero) | x8 | $5M | Yes | Yes | Galaxy Slap, Laser Cape |
| 10 | $125B (was 250B) | Girafa Celestre (was Tralalero) | x9 | $25M | Yes | Yes (3rd floor) | Glitched Slap, Body Swap Potion |
| 11 | $800B (was 1T) | Tralalero Tralala (was Odin) | x10 | $100M | Yes | Yes | Splatter Slap, Paintball Gun |
| 12 | $3.5T (was 7T) | Odin Din Din Dun (was Trenostruzzo) | x11 | $500M | Yes | Yes | Heart Balloon, Magnet |
| 13 | $14T | Trenostruzzo Turbo 3000 (was Ballerino) | x12 | $1B | Yes | Yes | Megaphone, BeeHive |
| 14 | $40T (was 100T) | Trippi Troppi Troppa Trippa | x13 | $2.5T | Yes | Yes | Gummy Bear, Subspace Mine |
| 15 | $100T (was 500T) | Pakrahmatmamat | x15 | $10T | Yes | Yes | Heatseeker ($750M) |
| 16 | $1Qa | Los Tralaleritos | x16 | $25T | Yes | Yes | Attack Doge ($1B) |
| 17 | $2Qa | Job Job Job Sahur + Chicleteira Bicicleteira | x17 | $50T | Yes | Yes | Giant Potion ($1.5B) |
| 18 | $10Qa | Graipuss Medussi | x18 | $100T | Yes | Yes | Flash Teleport ($3B) |
Strategy: Store required Brainrots on an alt account before rebirthing. Rebirth 1–4 need 2 Brainrots; later mostly 1 (RB17 needs 2 Secrets). Common/OG never required.
Gears / Items (39+ in Coins Shop)
Bought with cash (unlocks scale with rebirths). Cannot use while carrying a Brainrot. Robux Shop offers permanent versions. Event spin wheels add themed variants.
Key Examples (full shop has 39; categorized):
- Basic (0 RB): Slap ($500, knockback), Speed Coil ($750, +50% speed), Trap ($1K, freeze 7s).
- RB1+ Offense: Iron/Gold/Diamond/Emerald/Ruby/Dark Matter/Flame/Nuclear/Galaxy/Glitched/Splatter Slaps (progressively stronger flings), Bee Launcher (control invert + zoom), Rage Table, Taser (ragdoll), Medusa’s Head (petrify 3s), Boogie Bomb (dance + drop Brainrot).
- Utility/Mobility: Gravity Coil (+100% jump), Coil Combo, Grapple Gun, Invisibility Cloak (+100% speed while invisible), Quantum Cloner (swap with clone), Laser Cape (see invisible + lasers), Body Swap Potion.
- Defensive/Trap: All-Seeing Sentry (auto-shoot through walls), Web Slinger (immobilize 10s), Subspace Mine, BeeHive, Heart Balloon, Magnet.
- Endgame (high RB): Giant Potion (1.5B, huge size + immunity), Flash Teleport (3B), Heatseeker/Attack Doge.
Most expensive: Giant Potion (1.5B at RB17). Popular: Invisibility Cloak, All-Seeing Sentry, various Slaps.
Map, Shops & Events
- Single hub map with central red conveyor (Brainrot spawn point), 8 bases, clustered shops, and machines (Fuse/Craft/Witch Fuse — some replaced over time).
- Coins Shop: Gears (cash).
- Robux Shop: Permanent gears, gamepasses, cash boosts, Lucky Blocks.
- Events: Regular (Divine, Bloodmoon, Candy Aurora, Molten, Galactic, etc.) with mutations, themed gears, Lucky Blocks. Admin Abuse (hosted by SpyderSammy, Tuesdays/Saturdays ~3 PM EST): 4x–20x luck, high-tier spawns, chaos (30–45 min).
- Upcoming: Cyber mutation event (Apr 18, 2026).
History & Major Updates
- Rapid growth since May 2025 launch.
- Machine evolutions (Fuse → Craft → Witch Fuse).
- Rebirth balancing (multiple requirement downgrades, e.g., Rebirth 14 overhaul).
- Mutation events added frequently.
- OG buffs, copyright replacements (e.g., Tung Tung Tung Sahur → Gangster Footera).
- Base slot/floor expansions, trading plaza community additions.
- Plushie merch/DLC integrations.
Additional Features
- Trading Plaza: Unofficial player trading.
- Gamepasses/Badges: Permanent boosts, starter gears.
- Rituals/Admin Commands: Rare spawns.
- Value Lists: Community-driven (Google Sites/Reddit) for trading economics.
