These Plant Brainrot Simulator codes gave me a huge early boost (don’t miss UPDATE9)

How Codes Fixed My Slow Start in Plant Brainrot Simulator

After spending my first few hours in Plant Brainrot Simulator just grinding coins and placing basic plants, I thought that was simply how the game was meant to feel: slow, a bit stingy, and very “one more wave” to unlock anything meaningful. I literally ignored the little paper airplane icon in the corner.

The breakthrough came when I finally started redeeming codes. One code dropped a few thousand Crystals into my account, another stacked me up with element Fruits, and suddenly I was skipping hours of early-game grind. Instead of crawling to new plants and upgrades, I was blasting through waves and unlocking stronger setups way earlier than I “should” have.

This guide is the list I wish I had on day one: a single place with the key Plant Brainrot Simulator codes, how to redeem them step by step, and how to turn those free Crystals and Fruits into actual power instead of wasted boosts.

Working Plant Brainrot Simulator Codes That Gave Me the Biggest Boost

When I last sat down to clean up this guide and test everything, the codes below were still working for me. They can expire without warning, though, so treat them like time-limited loot: the sooner you redeem them, the better.

High-value Crystal codes (priority #1)

Crystals are the big accelerator in Plant Brainrot Simulator. These are the codes that gave me the biggest Crystal spikes:

• UPDATE9 – Redeem for a bundle of freebies (for me this included a noticeable chunk of Crystals).
• 10KDC2 – Redeem for around 5,000 Crystals. This was my single biggest Crystal injection.
• 9KDC1 – Redeem for around 4,000 Crystals.
• CRYSTAL5000 – Redeem for up to 5,000 Crystals. This one has worked for me, but I’ve seen players say it sometimes shows as expired, so try it but don’t count on it staying forever.
• CRYSTAL2 – Redeem for 2,000 Crystals.
• CRYSTAL1 – Redeem for 1,000 Crystals.
• BOSSFIX – Redeem for around 2,000 Crystals.
• UPDATE5 – Redeem for about 1,000 Crystals.
• update4 – Redeem for about 1,000 Crystals (note the lowercase “u”).
• FIXED4 – Redeem for around 500 Crystals.
• 8KDC – Redeem for freebies (I’ve usually seen Crystals out of this one).

Don’t make my mistake of spending these Crystals on every shiny button you see. Further down I’ll explain what to focus on first so you don’t burn them on low-impact upgrades.

Fruit and combat-focused codes

These codes stack your inventory with different Fruits that tie into your damage and builds later. They feel a bit abstract at first, but they’re huge once you start fusing and optimizing plants.

• REDRESS – Redeem for x100 Bomb Fruit.
• kgfruit – Redeem for x10 KG Fruit.
• NEWFRRUIT1 – Redeem for Bomb Fruits (good for explosive setups).
• NEWFRRUIT2 – Redeem for x5 Reversion Fruit (handy if you mess up a build).
• 1KLIKE – Redeem for Darkness Fruits.
• 5KLIKE – Redeem for more Darkness Fruits.
• Christmas1 – Redeem for Darkness Fruits.
• Christmas2 – Redeem for Bomb Fruits.
• UPDATE1 – Redeem for x5 Venom Fruit.
• FUSE777 – Redeem for x50 Frozen Fruit.
• BEST999 – Redeem for x50 Flame Fruit.
• NEW666 – Redeem for x50 Venom Fruit.
• VIP888 – Redeem for x50 Darkness Fruit.
• GROW888 – Redeem for x50 Bomb Fruit.

I wasted a bunch of these early on because I didn’t really understand how strong element Fruits become once you unlock more advanced upgrades. My advice: hoard them until you have a clear plan for which plants you want to scale.

Update, potion, and “freebie” codes

These codes are usually tied to patches, fixes, or milestones. They tend to give a mix of Crystals, Fruits, and sometimes other goodies like potions or mounts.

• UPDATE8 – Redeem for freebies. Requires Rebirth 5 to work, so don’t panic if you get an error before then.
• UPDATE7 – Redeem for freebies.
• UPDATE6 – Redeem for freebies.
• UPDATE2 – Redeem for freebies.
• UPDATE3 – Redeem for freebies.
• POTIONCODE1 – Redeem for freebies (typically potions).
• POTIONCODE2 – Redeem for freebies.
• POTIONCODE3 – Redeem for freebies.
• POTIONCODE4 – Redeem for freebies.
• AREAPOTION – Redeem for freebies (area-focused potions).
• MOUNT001 – Redeem for mount-related freebies.
• FIXED9 – Redeem for freebies (usually compensation from a bug fix).
• FIXED8 – Redeem for freebies.
• FIXED7 – Redeem for freebies.
• FIXED6 – Redeem for freebies.
• FIXED001 – Redeem for freebies.
• RELEASE1 – Redeem for freebies.
• RELEASE2 – Redeem for freebies.
• RELEASE3 – Redeem for freebies.
• SINP5 – Redeem for freebies.
• Christmas3 – Redeem for freebies.

These “freebie” codes are more random in what they give, but they all helped me smooth over progression bumps, especially when I was just short on resources for an upgrade.

As far as I’ve seen, there haven’t been many clearly labeled “expired” Plant Brainrot Simulator codes. That doesn’t mean none have expired; it just means you should expect a few in this list to quietly stop working over time.

How to Redeem Plant Brainrot Simulator Codes (Step by Step)

This is the part I struggled with embarrassingly long. The redeem button isn’t huge, and on my first day I managed to ignore it completely. Here’s exactly how to redeem codes:

• Launch Plant Brainrot Simulator on Roblox and wait until your character fully loads into the garden.
• Look at the top-right corner of your screen. You should see a gift box icon for Daily Rewards, and just to the right of it, a paper airplane icon.
• Click or tap the paper airplane icon. This opens the code redemption window.
• In the text field labeled something like ENTER CODE, paste or type your code exactly as it appears in the list above.
• Press the green Claim! button.
• If the code is active and you haven’t used it before, you’ll see a success message and your rewards will appear instantly.

If you’re on a server where the UI has changed slightly and you don’t see the paper airplane, look around for anything labeled “Codes” in the main screen icons or the shop/settings menu. Roblox games occasionally shuffle these buttons between updates, but it’s almost always somewhere on the main HUD or in a simple sub-menu.

Redeeming codes works the same across PC, mobile, and console – the button is in the same place, you just tap it with your finger or controller cursor instead of clicking.

Troubleshooting: Why Your Code Might Not Be Working

I’ve had plenty of “Invalid code” pop-ups even when I was sure I had a working one. Most of the time it was something simple. Before you assume a code is dead, run through this quick checklist:

• Check for typos – Codes are picky. UPDATE5 is not the same as update5. I now always copy and paste from a list instead of typing by hand.
• Watch out for extra spaces – On mobile, it’s easy to copy a space at the start or end. If in doubt, delete the whole line and paste again.
• Case sensitivity – Some codes are all caps for a reason. Enter them exactly as written.
• Already redeemed – In Plant Brainrot Simulator, some used codes just come back as “invalid” instead of “already claimed.” If you’re sure you used it before, that’s probably why.
• Progress requirements – UPDATE8 specifically needs Rebirth 5 to work. If a code refuses to redeem even though others do, check if it has a hidden requirement like this.
• Server version – When a fresh code drops, some servers don’t recognize it right away. I’ve fixed this more than once by leaving the game and hitting Rejoin or picking a newer-looking server from the Roblox game page.
• Actually expired – If you’ve double-checked all of the above and it still fails, the code’s probably gone. Lists on the internet don’t always update the moment a code dies.

My personal rule now: if a new code doesn’t work, I restart the game once, try a second server, and if it still fails, I assume it’s either gated behind progress or already expired.

When New Plant Brainrot Simulator Codes Usually Drop

There’s no official calendar, but after tracking this game for a while, a few patterns have been really consistent for me:

• Major updates – Codes like UPDATE5, UPDATE8, and UPDATE9 show up around big game patches. When you see “UPDATE X” in the game title, it’s worth hunting for a matching code.
• Like milestones – Codes such as 1KLIKE and 5KLIKE are obvious giveaways that the devs drop rewards when the game hits like targets. Keep an eye on the like count on the Roblox game page.
• Holiday or seasonal events – The Christmas1, Christmas2, and Christmas3 codes arrived around festive events. Expect similar patterns for other big holidays.
• Bug fixes and compensation – Anything starting with FIXED or names like BOSSFIX usually show up after a rough patch or bug. They’re basically “thanks for your patience” gifts.
• Community channels – The fastest way I’ve found new codes is watching the game’s Roblox description and the official community spots (like the developer’s Discord or X feed). Codes tend to drop “a dime a dozen” around weekly updates.

If you care about staying on top of every single code, get into the habit of glancing at those official channels whenever you log in or notice “UPDATE” in the game name.

How to Spend Your Free Crystals and Fruits Efficiently

Once I finally cashed in all these codes, I made a new mistake: I started clicking every upgrade button that lit up. The result? I burned thousands of Crystals for very little actual power. Here’s the priority order that’s worked much better for me.

Crystal spending priorities

• Prioritize permanent upgrades – Anything that clearly says it boosts your damage, income, or capacity forever is first in line. In most simulators (including this one), these give the best long-term value per Crystal.
• Unlock or upgrade key plants – If Crystals help you access stronger plants or extra slots earlier, it’s almost always worth it. One good plant that melts waves is better than a small pile of short buff items.
• Avoid low-impact rerolls early – Rerolling minor stats or visuals is a late-game luxury. Until you’re comfortably clearing waves and rebirthing, save those Crystals for big upgrades instead.

Smart use of Fruits

Fruits (Bomb, Venom, Darkness, Flame, Frozen, etc.) really shine once you’re leaning into specific plant types and synergies.

• Pick a core damage type – If you find yourself relying on one element (for example, Bomb-style explosive damage), focus most of your matching Fruits there instead of spreading them thin across everything.
• Wait until you unlock more systems – Some Fruits become much more valuable once you unlock fusion or more advanced upgrades. It’s better to sit on a big stash than to use them randomly early on.
• Keep a few Reversion Fruits spare – Codes like NEWFRRUIT2 give Reversion Fruits. I always keep a couple in my back pocket so I can undo a bad decision without hating myself for it.

Think of codes as a free respec safety net: they let you experiment more boldly with builds because you’re not scraping together every last Fruit and Crystal by grinding alone.

Final Thoughts: Lock In Your Free Power Before It Disappears

Once I started treating Plant Brainrot Simulator codes as part of my regular routine-log in, grab Daily Gift, redeem any fresh codes, then play-my progression completely changed. Early areas stopped feeling like a slog, and I hit my first few Rebirths much faster than I did on my “no-codes” experiment account.

If you follow the steps here, redeem the high-value Crystal codes first, and spend your rewards on permanent upgrades and focused builds, you’ll skip a ton of the slow start that most new players get stuck in. And if a few of the codes above have quietly expired by the time you read this, don’t worry—new ones tend to show up around every big update.

Claim what you can now, keep an eye on new UPDATE and FIXED codes, and your garden will be melting Brainrots long before most players even realize that little paper airplane button exists.