Defend your digital kingdom in Castle Defense Online, the thrilling Roblox tower defense! Strategically place powerful units and fend off endless enemy waves trying to breach your castle walls. Want an instant edge? Dive into the action with exclusive gift codes that grant you a trove of free gems! Use these precious gems, the game’s primary currency, to unlock adorable yet powerful pets and massively upgrade your defenses, turning the tide of battle.
Castle Defense Online Codes (Black Hammer)
(Updated on September 18, 2025)
Every wave brings new challenges, demanding smart resource management and unit deployment to ascend the leaderboards. With unique defender units and frequent updates, this PvE adventure offers endless strategic fun. Grab your codes and start defending your castle today!
| CODE | REWARDS |
|---|---|
| OUTLOOK | 50 Gems |
| RUSSO | 310 Gems |
| PENGUINPEEP | 840 Gems |
| SAMANTHA |
1240 Gems |
| FTCRIS | 320 Gems |
| Release | 3540 Gems |
| DVPLAYS | 30 Gems |
| 1000LIKES | 830 Gems |
| LEENADNSCSISTO | 2740 Gems |
| NEDNOLDIE | 4350 Gems |
| ECSCFDENEST | 1970 Gems |
| AEEIENS | 20 Gems |
| NEIEADNSSCDEOC | 70 Gems |
To redeem Castle Defense Online codes, find the game’s promo or code redemption section. Enter your code there for rewards.