The biggest buffs in Sell Lemons come from Void Evolution, a late-game system that hands out permanent income speed multipliers each time you evolve your fruit. It sits behind two gates. You first need the Rebirth mechanic, and then you need a very large investor count to make the portal appear.
Quick answer: Earn roughly 77 Sextillion Cash to unlock Rebirth, then keep rebirthing until you reach 501.2 Quadrillion investors. Joe the Alien arrives with a Void Evolution portal behind him. Enter it, walk to the Void Altar, interact, and fill the Evolutions meter to 100% to claim your first permanent buff.
Requirements before you can evolve
Evolution depends on investors, and investors come from rebirthing. That makes the Rebirth feature the true starting point. Rebirth unlocks once your total progression value reaches roughly 77 Sextillion Cash, tracked across the money you hold and the money you have already spent on upgrades and buttons around your base.
Once Rebirth is available, it becomes your main engine for gaining investors. Every reset converts your progress into investor growth, and investors are the currency that spawns the Void Evolution portal.
- Unlock Rebirth by earning around 77 Sextillion Cash in total valuation.
- Keep spamming Rebirth to build toward 501.2 Quadrillion investors.
- Spend on Powers between resets so you reach the goal faster.
- Use the Sewer area, which offers two acceleration methods you cannot get above ground.
Balance matters here. Rebirthing too aggressively without keeping income steady slows you down, so alternate between resets and rebuilding your cash flow.
Open the Void Evolution portal
Evolve at the Void Altar and claim the buff
With the Evolutions menu open, your task is to keep grinding investors until the meter fills to 100%, then press the Evolve button. Evolving resets both your Powers and your progress, but that is the only cost. In exchange, you get a permanent income speed multiplier that stays with your base for good.
The multipliers stack. Every tier you unlock builds on top of the previous one, so each evolution moves you roughly 42 times faster than the tier before it. That compounding is why the numbers climb so quickly once you commit to the loop.
You know it worked when the Evolve button locks in your new fruit tier and your income speed multiplier updates. From there, rebirth again, rebuild investors, and repeat for each higher evolution.
All Evolution fruit tiers and multipliers
Beyond the starting Lemon, there are nine evolution tiers. Each one requires a specific investor count and grants a total speed multiplier that carries the buffs from every earlier tier.
| Fruit | Required investors | Total speed multiplier |
|---|---|---|
| Lemon | 0 | x1 |
| Orange | 501.2 Quadrillion | x42 |
| Lime | 19.95 Nonillion | x1,764 |
| Grapefruit | 794.3 Tredecillion | x74,088 |
| Tangerine | 31.62 Octodecillion | x3,111,696 |
| Pomelo | 1.259 Tresvigintillion | x130,691,232 |
| Abyssalime | 50.12 Septenvigintillion | x5,489,031,744 |
| Nullfruit | 1.995 Duotrigintillion | x230,539,333,248 |
| Voidmelon | 79.43 Sextrigintillion | x9,682,651,996,416 |
| Purity | 3.162 Unquadragintillion | x406,671,383,849,472 |
Note: Remote Buy, a related late-game convenience, unlocks around Evolution 6 and costs a Trigentillion investors, a figure most players only reach shortly before the endgame.
The path to these buffs is simple to describe and slow to grind. Lock in Rebirth, hammer resets while topping up Powers and using the Sewer accelerators, and cross each investor threshold to push your fruit from Lemon toward Purity. Since every multiplier stacks permanently, the investment you make now keeps paying out through every reset that follows.
