Spongebob Tower Defense Update 16.5 Guide, New Secret, Codes & More!

Spongebob Tower Defense just dropped Update 16.5, and it’s packed with new content, secret additions, and exclusive event challenges. If you’re looking to dive into everything this update has to offer—including the Rock Bottom zone, new codes, and limited-time content—this guide will help you make the most of it.

Secret Agent Star Has Arrived!

The biggest highlight of Update 16.5 is the Operation: Krabby Code mini-event. This is a special 4-week questline hosted by none other than Secret Agent Star himself. You’ll find him in-game near a special mission circle, where you’ll be able to start taking on weekly missions. This is a 4-week long quest event. Each week, three missions will be released:

• Mission 1 on Tuesday
• Mission 2 on Wednesday
• Mission 3 on Thursday

If you miss a day, don’t worry — missions remain available once unlocked, so you can still catch up later in the week. This system encourages daily logins, but it’s also flexible enough to allow you to grind out all three missions during the weekend if you’re behind. – How to Get Secret Agent Star!

Rewards You Can Earn

The rewards for completing these missions are generous, especially if you’re consistent each week:

• Week 1 Reward: Complete all 3 missions to earn a limited Coupe Mount.
• Week 1 & 2 Combined: Completing all missions in the first two weeks gives you even more exclusive bonuses.

Full Completion Bonus: If you complete all missions in all 4 weeks, you’ll unlock:

• Secret Agent Star (unit)
• Secret Chest
• Gems and more mission-based rewards

These rewards won’t be obtainable after the event ends, so if you’re a collector or just want to maximize your account strength, now’s the time to get to work.

Spongebob Tower Defense Update 16.5 Codes & Bonus Rewards

As usual, Update 16.5 may be dropping fresh codes alongside the mini-event. Make sure to check the official SpongeBob Tower Defense socials and Discord regularly — new codes often come during events like this and can include:

• BasketofGoodies
• ThatsSoManyLikesWowWow
• EGGHUNTBB2025
• EasterBunnySwag

Check out the previous Spongebob Tower Defense Codes for more redeemable rewards! Update 16.5 might not bring a new map, but it offers something just as exciting — a progressive questline, valuable limited-time rewards, and a reason to log in several times a week.

Don’t sleep on Operation Krabby Code. If you’re aiming to get Secret Agent Star and all the exclusive goodies, start grinding those missions now! Keep checking back for mission updates every Tuesday, Wednesday, and Thursday, and stay ready for more SpongeBob Tower Defense updates rolling out every Friday.