Spongebob Tower Defense Update 9 Guide, New Secret, Codes & More Info!

Spongebob Tower Defense has just released Update 9, bringing exciting new features, secret units, rebalanced rewards, and limited-time server boosts! If you’re looking to make the most of this update, this guide will cover everything you need to know, including how to unlock the new secret unit, achievements, boosted rewards, and more.
New Secret Unit – Sea Bear
A brand-new Secret Unit, the Sea Bear, is now available! You can obtain it through the Gem Summon, so make sure to stack up on gems and try your luck.
New Mythic Unit – Sea Rhino
The Sea Rhino is a special Mythic unit that appears only during the FINAL WAVE of a match. However, there’s a catch—a unit in your loadout (or a teammate’s) must have the SEA BEAR trait for the Sea Rhino to spawn.
To unlock the Sea Rhino, you need to defeat it in battle, so be prepared for a tough fight!
Rebalanced Story Mode Rewards & Unit Upgrades
Story Mode has been adjusted to offer better rewards and balanced unit upgrades. This means more efficient progression and better opportunities to strengthen your team.
New Achievements
The update introduces 18 new categories of achievements, giving players more goals to strive for. Completing these will likely grant extra rewards, so check your achievement list and start grinding!
Weekly Elite Quests & Daily Login Rewards
- New Weekly Elite Quests offer special challenges and exclusive rewards.
- Daily Login Rewards have been updated, making it more rewarding to log in consistently.
Boosted Merchant Offers
You can now purchase multiple copies of the same item from the Merchant, allowing for easier upgrades and stockpiling of valuable resources.
Limited-Time Server Boosts
Several boosts are available for a limited time, helping players gain XP, gems, and Golden Spatulas faster:
- x2 XP Boosted Weekend – Active from February 28, 4:00 PM CT to March 2, 11:59 PM CT.
- x2 Gems Boost – Active on Saturday, March 1, from 8:00 AM CT to 11:59 PM CT.
- x2 Golden Spatulas Boost – Active on Sunday, March 2, from 8:00 AM CT to 11:59 PM CT.
2 New Codes for Spongebob Tower Defense Update 9:
- SummonMeASecret // 5,000 Gems
- LiveforUpdate9 // (2) x2 Gems, 2,000 Gems
Check out Spongebob Tower Defense Codes! for other more code!
Update 9 in Spongebob Tower Defense introduces exciting new mechanics, including the Sea Bear and Sea Rhino units, better rewards, achievements, and limited-time boosts. Make sure to take advantage of the x2 XP and gem boosts, and don’t miss out on the new secret unit!