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A promo code is a short code that you enter in the game to receive a reward: resources, containers (loot boxes), or arsenal parts. Promo codes are usually tied to holidays and events. Below, you’ll find where to enter the code, what it gives you, and why you might sometimes see the message “Invalid code.” Everything is described according to the game’s code.
Where did this guide come from? The mechanics of promo codes and the list of active codes are explained based on the Xterium War of Alliances game code. The admins distribute current codes during holidays—stay tuned for game news, the forum thread, and the game wiki.
Step 1. Open the "Promo Codes" section
The game has a separate "Promo Codes" section with an input field and an "Enter Promo Code" button. Open it—there you'll see the "Enter Promo Code" field.
Step 2. Enter the code and confirm
Enter the promo code in the field and click “Enter Promo Code.” The code is not case-sensitive—the game will automatically adjust it as needed. If the code is correct and currently valid, a message saying “Gift Received” will appear, and the reward will be credited immediately.
⏳ There is a pause between attempts. According to the game’s rules, you can re-enter the code no more than once every 10 seconds. If you enter it too quickly, a message saying “Waiting for re-entry” with a countdown will appear—just wait a few seconds.
Step 3. Claim your reward
What a promo code actually gives you depends on the specific code. Depending on the game code, the rewards can be as follows:
- Antimatter is a premium resource (known as “Premy” in gamer slang; see [](/knowledge/glossary)).
- Dark matter is a valuable resource for upgrades.
- Containers (loot boxes) are boxes with random contents (see How Containers Work).
- Arsenal parts and blueprints—to strengthen the fleet.
- Sometimes—star ore and fashion.
Holiday promo codes often include a generous selection: antimatter, dark matter, and several containers at once.
Why isn't the promo code working?
Depending on the game, the code may not work for several reasons:
- "Invalid code" — either the code does not exist, or its validity period has not yet begun or has already ended. Promotional codes have specific validity periods (for example, a New Year's code is valid around January, and a Halloween code is valid in late October).
- "Already activated" — you've already entered this code. Each promo code can only be used once.
- Vacation Mode. While [](/knowledge/guides/kak-vklyuchit-otpusk) Vacation Mode is enabled, you cannot enter a promo code—the game will notify you that you are in Vacation Mode. You must exit Vacation Mode first.
Holiday codes are often tied to a specific year: the year is added to the name (for example, the New Year’s code for that year). Therefore, last year’s code may no longer be valid this year—be sure to get the current code from the event’s news section.
Frequently Asked Questions
Where do I enter a promo code in Xterium? In the separate "Promo Codes" section, there is a field labeled "Enter Promo Code" and a button labeled "Apply Promo Code." Enter the code and confirm.
What does the promo code offer? It depends on the code. Usually, it's antimatter, dark matter, containers (loot boxes), and sometimes arsenal parts, starlite ore, or mods. Holiday codes give you a generous selection all at once.
Why does it say “Invalid code”? Either this code does not exist, or its validity period has not yet begun or has already expired. Promotional codes have a specific validity period, and they are often tied to a specific year.
Can I enter the same promo code twice? No. Each code is a one-time code—after you enter it, a message saying “Already activated” will appear. There is also a pause of about 10 seconds between attempts.
The promo code won't work in vacation mode—why? That's how it's designed: you can't redeem promo codes while vacation mode is enabled. Exit vacation mode and try again.
What to Read Next
Promo codes are part of the rewards system. Check out this roundup All About Promo Codes and Bonuses and this guide How Bonuses Work. If you’ve received containers as a reward, you’ll find this helpful How Containers Work. If you come across unfamiliar terms (prems, mods), look them up in the glossary.
