The Rotmon Guide
Every catchable Rotmon in Brain Rot IRL, grouped by rarity tier. Click any creature for the full lore, spawn conditions, behavioural traits, catch tips and stats.
There are currently 108 Rotmons in the wild across five rarity tiers: Common, Rare, Ultra (often called Legendary), Mythic and Limited Edition. New Rotmons ship within the same week a meme goes viral — see the news feed for patch notes.
⭐ LIMITED EDITION ⭐ — 10 Rotmons
Limited Editions are event-only or random ultra-rare drops at roughly 1-in-1000 encounters. They despawn five minutes after appearing. Every Limited carries a permanent +5% XP-gain passive on your account when caught.
🤲 SIX SEVEN 🤲 — 7 Rotmons
Mythic Rotmons are the apex of the standard ladder. Roughly 1-in-300 wild encounters. Master Rizz Ball, center throw, deep breath. A missed throw means the Mythic flees within seconds.
ULTRA SIGMA — 22 Rotmons
Ultra-tier Rotmons (often called Legendaries in chat) are the daily chase. Roughly 1-in-15 encounters, strong biome bias, real flee rate. Always carry one Ultra Rizz Ball when you log in — missing the first throw is normal.
FIRE — 46 Rotmons
Rare Rotmons spawn at roughly 25% of all encounters and show clear biome bias. Cafés, gyms, parks and waterfronts all shift the wild table. Great Rizz Balls land most Rares; a Standard works on the friendly ones.
MID — 23 Rotmons
Common Rotmons spawn constantly across every biome. They're the backbone of any starter dex — easy catches, low XP, high volume. A center throw with a Standard Rizz Ball lands them reliably.
Ready to start catching?
Open Brain Rot IRL, allow location, and walk. Your first Common is usually under 5 minutes away.
New to the game? Read the how-to-play guide, then the beginner's first week walkthrough. For spawn mechanics see how spawn rarity actually works.