Knock Knock: Room Defense Top Up

Knock Knock: Room Defense Top-up Guide

Please make sure you fill in the right account info so your Diamonds can be delivered without any issues.

Supported Platforms

Knock Knock: Room Defense Mobile (iOS & Android)

Supported Servers

Global Server

Required Information for Knock Knock: Room Defense Top-up

Please make sure you have linked your game with Email, Google or Facebook before the top-up.

• Google/Facebook/Email account
• Google/Facebook/Email password
• Character Name
• Player ID

How to Bind Your Account?

• Tap the menu icon in the upper right corner.
• Tap Bind
• Tap Account Binding, then select Email, Google, or Facebook to bind. We strongly recommend choosing Email.

1. Place your order and complete the payment.

2. Please provide your account information after the payment for us to log in and complete the top-up. Please do not log in to the game during this process.

3. We will top up the Diamonds in the game based on the product you ordered.

4. After we complete the purchase/top-up, we will log out of your account and clear the login history.

5. You will receive a notification once the top-up is complete, and you can then log in to the game to verify the transaction.

About Knock Knock: Room Defense

Knock Knock: Room Defense is a gothic-chibi horror tower defense game, launched globally in September 2026. Each match lasts just 5 minutes — close the door, build your defense line, and survive the night.

The game blends tower defense, idle RPG, and horror atmosphere. Your bed generates Gold, your door holds back monsters, and your heroes fight back. With over 100 unique heroes and ghosts in a cute-but-creepy art style, you can explore haunted locations like ghost trains, midnight dormitories, and underground caves.

What's the Main Currency in Knock Knock: Room Defense?

Knock Knock: Room Defense Diamonds are the main premium currency. You can use Knock Knock: Room Defense Diamonds to summon heroes from the hero banner — 1 pull costs 250 Diamonds, and 10 pulls cost 2,200 Diamonds. Upgrading gear and many other things also require Gold and other materials, and Diamonds can be exchanged for all of them.

How to get Knock Knock: Room Defense Diamonds:

In-Game Rewards– Completing stages, clearing the Infinity Train, and finishing daily challenges reward you with Gold, Hero Contracts, and other items.

Promo Codes– The game regularly releases redemption codes that give free Diamonds. For example, the code knock2026 grants 100 Diamonds and 1,000 Soul Flame.

Purchase on LootBar– The fastest way to get Diamonds is through LootBar. It's a trusted recharge platform with fast processing.

Why Do You Need Knock Knock: Room Defense Diamonds?

Knock Knock: Room Defense is free to play, but Knock Knock: Room Defense Diamonds are key to summoning powerful heroes and progressing faster — especially when you need to clear harder stages.

1. Summon Heroes

Knock Knock: Room Defense Diamonds let you pull from the hero banner. A single pull costs 250 Diamonds, and a 10-pull costs 2,200 Diamonds. With a wide roster of heroes, having enough Diamonds means you can build a stronger team and find the right synergies.

2. Speed Up Progression

Free players hit walls where progress slows down. Knock Knock: Room Defense Diamonds let you summon more heroes, unlock upgrades, and push further into the campaign.

3. Farm Gear and Resources

Knock Knock: Room Defense Diamonds can be used alongside other resources to farm gear and materials from the School Trip and other modes. Investing in Diamonds helps you keep your team battle-ready.

Why do players trust LootBar for Knock Knock: Room Defense Top-up?

LootBar is a secure and legit game trading platform offering services such as game top-ups, item trading, and more. We partner with numerous gaming giants, supporting top-ups for over 100 games.

• Exclusive Offers for all packs! By choosing LootBar, you get access to exclusive promotions on Knock Knock: Room Defense Diamonds, bonus rewards, and limited-time deals.
• 100% Secure Transactions. LootBar supports 50+ payment methods. All transactions are encrypted with bank-level encryption technology, processed through PCI DSS-certified payment channels, and equipped with an intelligent anti-fraud monitoring system to protect payment security in all aspects.
• Fast Delivery. Hundreds of thousands of real buyers use LootBar's service and receive their purchased Knock Knock: Room Defense Diamonds quickly.
• 24/7 Customer Support. Our Knock Knock: Room Defense recharge support team is available around the clock to assist you with any questions or issues, ensuring a smooth recharge experience.

Meanwhile, LootBar is constantly expanding into new games and new businesses, and improving its products to meet the browsing and purchasing experience needs of its millions of active users.

How to Top Up Knock Knock: Room Defense on LootBar?

Here's how to top up Knock Knock: Room Defense on LootBar:

• Go to the LootBar official website, pick your language and currency, and log in.
• On the homepage, click Top-Up > Knock Knock: Room Defense.
• Choose items you want to buy, then click "Buy Now".
• Pick a payment method and click "Pay Now".
• Enter your game login info (Email account, password, Player ID) so we can get your order to you without any issues.