Sell Lemons tracks your progress with 24 Roblox badges that cover almost everything you do, from buying your first Lemon Stand to clearing a hidden sewer puzzle. Most unlock on their own as you play, but a handful demand deep endgame grinding or specific exploration before they pop.
Quick answer: Badges unlock automatically the moment you meet their condition, so buy each income source, hit the cash thresholds, unlock Powers, Rebirth at Joe the Alien, accept the Void’s offer, and finish the sewer and Dad’s quest lines. You can confirm every unlock in the Roblox badges menu on the game’s page.
All 24 Sell Lemons badges and unlock conditions
The badges fall into four groups. Income Source badges come from buying each of the eight businesses. Wealth Milestone badges fire when your cash balance crosses a named number. System and Exploration badges reward Powers, Investors, and quest progress. Hidden and Ultimate badges are the rarest, tied to the sewers and the Purity endgame.
| Badge | Icon | How to unlock |
|---|---|---|
| Sell Lemons |  | Buy the Lemon Stand, your first income source. Earned in the first few seconds. |
| Lemon Delivery |  | Buy LemonDash, the timed delivery mini-game. |
| Wholesale Lemons |  | Buy Lemon Depot to move into bulk wholesale. |
| Lemon Trading |  | Buy Lemon Trading and play the stock exchange mini-game. |
| Advanced Lemons |  | Buy Lemon Labs for permanent buffs that persist across Ascends. |
| Really Advanced Lemons |  | Buy Lemon Robotics for full automated production and sales. |
| Lemon-Based Government |  | Buy Lemon Republic, which unlocks at 275 septendecillion. |
| Interstellar Lemons |  | Buy Orange X (LemonX). Only available after Void Evolution and a rocket launch to the Moon. |
| Millionaire |  | Reach a cash balance of $1 million. |
| Billionaire |  | Reach a cash balance of $1 billion. |
| Trillionaire |  | Reach a cash balance of $1 trillion. |
| Decillionaire |  | Reach a cash balance of $1 decillion (10³³). |
| Vigintillionaire |  | Reach a cash balance of $1 vigintillion (10⁶³). |
| Trigintillionaire |  | Reach a cash balance of $1 trigintillion (10⁹³). |
| Quattuorquinquagintillionaire |  | Reach a cash balance of $1 quattuorquinquagintillion. |
| Centillionaire |  | Reach a cash balance of $1 centillion, the highest named cash milestone. |
| Powered Up |  | Unlock your first Power. |
| Ultimate Power |  | Fully unlock all 7 Powers. |
| Out of this World |  | Obtain your first Alien Investor by Rebirthing at Joe the Alien. |
| Dimensional Dealmaker |  | Accept the Void’s offer during deep Void Evolution progression. |
| We Are So Back |  | Complete Dad’s Mission, a hidden quest line. |
| Cosmic Farmer |  | Harvest the Cosmic Cash Vine after unlocking the Sewer Gate. |
| Good Samaritan |  | Talk to the alien NPC in the Sewer Area after solving the lever puzzle. |
| Purity |  | Achieve the purest form of fruit, the 100% completion goal. |
Income Source badges
Each of the eight businesses awards a badge the moment you purchase it. The early ones arrive within minutes, so nearly every player collects Sell Lemons, Lemon Delivery, and Wholesale Lemons during their first session. The later sources gate behind enormous costs.
Lemon Republic, which grants Lemon-Based Government, opens at 275 septendecillion, so fast Ascend cycling and good NPC deal timing are needed to fund it. Orange X (LemonX) is the toughest of the set. It only becomes reachable after Void Evolution turns your lemons into oranges, at which point you build a rocket and launch to the Moon to start interstellar trading.
Wealth Milestone badges
These pop automatically when your cash balance crosses a named threshold. Millionaire usually lands inside the first half hour, and Billionaire and Trillionaire follow naturally as Lemon Depot upgrades and per-click multipliers stack up.
From Decillionaire onward, you need optimized Ascend builds and Evolution investment. Vigintillionaire wants Lemon Republic unlocked and several Evolution tiers, while Trigintillionaire and Quattuorquinquagintillionaire require Orange X income with high Ascend and Evolution levels. Centillionaire sits at the very top as the highest named cash milestone in the game.
System and Exploration badges
Powered Up comes from unlocking your first Power, which happens during mid-game progression. Ultimate Power is far harder and asks you to fully unlock all 7 Powers, making it one of the rarest badges in the game.
Out of this World is guaranteed on your first Rebirth through Joe the Alien or the side panel Rebirth button. It hands you your first Alien Investor and opens the Investor system, which adds a permanent 1% cash bonus per investor (2% with the UFO Key). Dimensional Dealmaker triggers when you accept the Void’s offer during deep Void Evolution. We Are So Back closes out Dad’s Mission, a hidden quest line that starts from Dad’s letter and rewards thorough exploration and NPC interaction.
Cosmic Farmer: Solve the sewer lever puzzle
Cosmic Farmer requires the Sewer Key, which unlocks the Sewer Gate and the Cosmic Cash Vine. The vine can be harvested once every 4 hours for a random amount of Cosmic Cash. To reach it, you pull and unpull a set of colored levers in a fixed order. If you have already finished the UFO Key quest, switch servers first so the levers reset to their starting positions.
Good Samaritan and the UFO Key
Good Samaritan asks you to help a stranger inside the Sewer Area. You first need the Sewer Key from the lever puzzle above, then you talk to the alien NPC hidden in the sewers. Completing this conversation is required to start the UFO Key quest line, which permanently doubles your Investor Bonus from 1% to 2%. Because it feeds directly into a permanent income boost, it is worth prioritizing once you can navigate the sewers.
Purity: The 100% completion badge
Purity is the rarest and most prestigious badge, treated as full game completion. Earning it means reaching the purest form of fruit by clearing the Purity Fruit quest line on top of 100+ Ascends and maximum Evolution. It remains the defining endgame target, claimed by only a few hundred players so far.
Every badge unlocks the instant its condition is met, with no manual claim step. To check progress at any time, open the badges menu on the game’s Roblox page, where unlocked and locked badges appear side by side along with how far you are toward each one.
