Updated: September 18, 2025
We looked for new codes!
Defend your Slime Castle from invaders! Gear up your army and prepare for an exciting battle in this unique and playful strategy game. Unlike typical medieval warfare, you’ll find that keeping your slime army upgraded is essential to navigating the slippery challenges ahead.
Unlock valuable items without spending a dime by using Slime Castle codes. Your troops deserve top-notch gear and crucial upgrades, so dive in and use the codes before they become inactive. If cute fantasy games are your jam, don’t forget to check out some Legend of Mushroom codes to bolster your mushroom army too.
Complete List of Slime Castle Codes
Active Slime Castle Codes
Slime Castle Codes
| LEAGUE | Free rewards (New) | |
| SLIME999 | Free rewards | |
| GOLFPOWER | 10 Golf Power Potions | |
| SLIMEFUN | 10 Epic Chest Keys and 30 Lucky Wheel Tickets | |
| SUNDAYFM | 20 Auto Grind Tickets | |
| 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.
How to Redeem Codes in Slime Castle
Redeeming codes in Slime Castle is quick and easy. Just follow these simple steps:
- Open Slime Castle on Roblox.
- Click the cogwheel icon in the top-right corner.
- Select the Redeem Code option.
- Enter your code in the pop-up text box.
- Hit Confirm to claim your rewards.
How to Find More Slime Castle Codes
You can discover fresh Slime Castle codes through the Slime Castle — Idle TD Discord server. Explore the channels for the latest codes and engage with the community. However, to save you time, bookmark this article and check back often for the most up-to-date codes.
What should you do if your Slime Castle codes are not working? If you’re facing issues, check for any spelling errors. Copying and pasting the codes can help you avoid typos. If, despite this, the codes still aren’t working, they might have expired. Let us know if you find an invalid code so we can keep our list accurate.
What is Slime Castle?
Slime Castle is a captivating mobile tower defense game that invites you to manage adorable slimes as they battle waves of enemies to defend your kingdom. To achieve success, focus on upgrading your slime troops’ stats, gear, and skills, or simply enable the auto-battle feature for a more relaxed gameplay experience as your slimes secure victory.
For additional fantastic rewards in other mobile games, explore our comprehensive Codes section on Moyens I/O. Your adventure in gaming awaits!