Updated: November 4, 2025
We looked for new codes!
You must protect the Slime Castle from enemies, so start preparing your army for battle in this slimy game. This isn’t your regular medieval war game, and things can get slippery if you don’t upgrade your slime army regularly.
You can get handy items for free with Slime Castle codes. Your army needs good gear and other essential upgrade items, so it’s time to step up your game and use codes before they expire. If you want another cute fantasy game (featuring cute mushrooms), then you should grab some Legend of Mushroom codes and start making a mushroom army.
All Slime Castle codes list
Active Slime Castle codes
Slime Castle Codes
| FUN4OCT | Free rewards (New) | |
| LEAGUE | Free rewards | |
| SLIME999 | Free rewards | |
| GOLFPOWER | 10 Golf Power Potions | |
| SLIMEFUN | 10 Epic Chest Keys and 30 Lucky Wheel Tickets | |
| SUNDAYFM | 20 Auto Grind Ticket | |
| SLIME777 | Lucky Wheel Tickets | |
| GUILDRAID | Free rewards | |
| SMILINGS | 10 Epic Chest Keys and 3 Epic Runes | |
| SLIM3TD | Free rewards | |
| TRYME2025 | Free rewards | |
| WEEKLY | Free rewards | |
| LUCKY2025 | 30 Lucky Wheel Tickets | |
| MONDAY175 | Free rewards | |
| LOVE2025 | 199 Hearts | |
| SLIME666 | 200 Gems and 10 Epic Keys |
Expired Slime Castle codes
- There are currently no expired Slime Castle codes.
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How to redeem codes in Slime Castle
Just follow the steps below to redeem codes for Slime Castle (available on Google Play and the App Store) in no time:
- Run Slime Castle on Roblox.
- Press the cogwheel button in the top-right corner.
- Tap the Redeem Code button.
- Type a code into the pop-up text area.
- Tap Confirm to get prizes.
How to get more Slime Castle codes
Slime Castle codes can be found on the Slime Castle — Idle TD Discord, so join and browse the channels if you don’t mind doing research on your own. However, there’s no need for that when you can find all the working codes easily on this list. So, it’s quicker to bookmark this article and return here from time to time to look for new codes.
Why are my Slime Castle codes not working?
If Slime Castle codes aren’t working for you, then you should double-check them for any spelling mistakes. I personally copy/paste codes to avoid typos, so that’s a handy method you can rely on as well. If the codes still don’t give you anything, then they’re no longer active. Inform us whenever you discover an expired code, and we’ll update our list.
What is Slime Castle?
Slime Castle is a mobile TD game where you can control adorable slimes and fight waves of enemies to protect your slimy kingdom. To win battles, you’ll need to upgrade the slime’s stats, armory, and skills. If you want your gameplay to be more idle, then turn on the auto-battle feature and sit back as your tiny slimes claim victories.
You can snatch more phenomenal rewards for other mobile titles in the rest of our Codes section here on Destructoid.
