Unofficial Sell Lemons Wiki — not affiliated with BloxByte Games or Roblox Corporation. Verify stats in-game after patches.
All secrets in Sell Lemons go beyond the main tycoon loop — hidden keys, maze areas, and collectible badges. This Sell Lemons Wiki page lists every verified secret and all Sell Lemons keys you need for endgame.
Most Sell Lemons secrets require mid-to-late progression: Cosmic Cash, Ascend 50+, and the sewer lever puzzle. Sell Lemons keys (Sewer Key, UFO Key) unlock the highest-value hidden zones.
Use our sewer map for lever locations, then follow the UFO Key and Good Samaritan guides for the rarest Sell Lemons secrets.
Sewer Key
Unlock the hidden Sell Lemons sewer area with Cosmic Cash. Contains lever puzzle, Cosmic Cash Rain, and UFO Key route.
Cosmic Cash · Ascend 50+
Read more →Sewer Maze & Lever Puzzle
7-step lever sequence (Blue, Red, Green, Unpull Red, Unpull Blue, Purple, Red) inside the Sell Lemons sewer map.
Verified Jun 2026
Read more →UFO Key
Found in the Sell Lemons sewer maze after lever puzzle. Doubles Investor bonus with Good Samaritan Badge.
Good Samaritan required
Read more →Purity Fruit
Ultimate endgame fruit (E9). Only ~502 players worldwide have the Purity badge in Sell Lemons.
<0.01% earn rate
Read more →All 24 Badges
Complete Sell Lemons badge list with earn rates from Roblox API — income, wealth, powers, and hidden badges.
24 badges
Read more →Cosmic Cash Zone
Hidden Cosmic Cash area unlocked by Sewer Key. Money Tree and Cosmic Farmer Badge harvest.
4-hour vine cooldown
Read more →Evolution Portal
Void Evolution Portal behind Alien Joe — unlock at ~500 Quadrillion Investors. Lemon to Orange and beyond.
Portal · Void Evolution
Read more →Rebirth & Ascend
How to ascend, rebirth at Joe the Alien, and unlock void rebirth through the Portal.
Prestige · Investors
Read more →Remote Buy Power
~1 septillion Investors or 459 Robux — purchase upgrades remotely in Sell Lemons.
7 powers
Read more →