Plants vs Brainrots Index — Brainrots List & Guide

Weight & earnings: A Brainrot's passive income when placed is driven by (a) its rarity tier, (b) its weight/size (larger weight → higher base $/s), and (c) mutation multiplier. Prioritize heavier Secret/Limited Brainrots with favorable mutations for highest passive income.

Spawn pool / randomness: Brainrots spawn from enemy waves; the in-wave spawn pool is randomized but biased by rarity tiers. Community trackers aggregate spawn observations to estimate relative frequencies. Use tracker data rather than single-session observation for reliable estimates.

Fused Brainrots: Fuse Machine results create additional Brainrots (fusion outputs) that may not be present in normal spawn pools; fused units can thus enlarge the effective drop set.

Defeat & collect: The standard method is to defeat Brainrots during waves and place them into your base. Many Brainrots simply drop as you kill them.

Eggs: Some Brainrots (including Secret-tier) are obtainable from special eggs (e.g., Secret Egg, Meme Lucky Egg). The Meme Lucky Egg has been sold in the shop (Robux) per community reports.

Fuse Machine: Combine qualifying plants + brainrots in the Fuse Machine to create rarer Brainrots; community guides and recipe lists exist and should be referenced when targeting a specific fused Brainrot.

Shop / limited offers: Certain Brainrots have been obtainable via limited shop events or promotional offers; keep an eye on in-game shop rotations and official announcements.

Event drops / admin events: Admin-triggered events or special weather windows can spawn exclusive types; the community often documents these in real time.

Weather / Event windows: Many mutations are tied to weather or global events (e.g., Frozen biome surge, Prismatic/Galactic/Volcano events). Frozen mutations are regularly reported to appear during a Frozen surge; other event mutations appear during their respective windows or via admin events. Watch the bottom-right weather indicator in-game for active events.

Observed probabilities: The game developer does not publish exact rates; community-collected samples show Gold as the most common mutation, Diamond much rarer, and Neon / special-event mutations extremely rare. Guide sites summarize observed rates but label them as community observations and not official figures.

Practical approach: treat mutation chances as stochastic and event-sensitive — maximize opportunities by playing during event windows and increasing your number of spawn attempts.

Luck stat & rebirth: Community guides report that your Luck stat (increased via Rebirth bonuses or other in-game buffs) improves the odds of higher-tier mutations. Rebirthing can permanently increase Money and Luck bonuses at the cost of resetting Brainrots/cash, which indirectly increases mutation yields over subsequent cycles.

Practical sequence: If you plan to pursue many high-tier mutations (Diamond/Neon), consider a rebirth schedule that balances the temporary reset cost with the long-term Luck stacking benefits. Verify exact Luck-to-probability scaling via community data collectors.