by Underwater Productions.
Build a Submarine Codes
Working Build a Submarine Codes
Last updated August 22, 2026
No working codes right now
We're tracking Build a Submarine and will list codes here the moment the developers release them. If you spot one first, send it our way below.
How to redeem codes in Build a Submarine
- Launch Build a Submarine on Roblox.
- Look for a Codes, Shop or settings button — usually on the side of the screen.
- Paste the code exactly as shown above. Codes are case-sensitive.
- Press redeem to claim your reward.
Codes expire without warning — if one fails, it was almost certainly pulled by the developer.
Found a code we're missing?
Submit it and we'll verify it before it goes live.
About Build a Submarine
🌊 Welcome to Build A Submarine! 🧱 BUY blocks, propellers, fuel, and more! 🔧 Customize and build your dream submarine your way! 💰 EARN cash every dive to upgrade your sub! 🕒 Even when you're offline, your submarine keeps swimming! 💤