Buy This Isn't Just Tower Defense CD Key for PC

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A This Isn't Just Tower Defense Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €6.47 (-6%) at Gameseal, Steam Gift format · Cheapest official key: €6.89 · 2 verified stores, 2 offers in stock · Updated 24min ago.

See 1 key from €6.89
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  • If you have not broken any of our rules, we will send you the cheapest version of the game to the email address associated with your account.
  • In the event that the game is out of stock or only available in a format such as accounts or physical, we will offer the possibility of an exchange for a prepaid card for the minimum value of the game on our platform.
  • For console games, a prepaid card of different amounts will be given instead of the game, due to regional limitations.
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  • This promotion is only available to US, UK and EU users.
  • Game redemption is only allowed once every 6 months per user.
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Product you are redeeming

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  • We will start the verification process of your account, which may take 48-72 hours.
  • If you have not broken any of our rules, we will send you the cheapest version of the game to the email address associated with your account.
  • In the event that the game is out of stock or only available in a format such as accounts or physical, we will offer the possibility of an exchange for a prepaid card for the minimum value of the game on our platform.
  • For console games, a prepaid card of different amounts will be given instead of the game, due to regional limitations.
  • Your tickets will disappear from your account
  • This promotion is only available to US, UK and EU users.
  • Game redemption is only allowed once every 6 months per user.
Thank you for redeeming your tickets. We will contact you shortly How do I earn more tickets?
Taxes not included! Taxes included!
Resellers
No payment fees With payment fees
4.3 (16.3k)
Subscription from 2.49€/month
-15%
Coupon
SEAL17CDK -17% copy Copied!
€7.80 €6.47
Global Icon
Region Global
Steam Gift
Product type Steam Gift
Standard
Edition Standard
Description Icon
Fees +€0.84
Official stores
1.8 (3.7k)
No code available
€6.89
Global Icon
Region Global
Steam Key
Product type Steam Key
Standard
Edition Standard
Description Icon
Fees -

About This Isn't Just Tower Defense

Place Towers, Defeat Enemies, Stack Upgrades

Strategically place your towers to fend off massive waves of thousands of enemies at once. Every defeated enemy grants resources you can use to endlessly upgrade your towers—more damage, faster shots, greater range. The pressure increases with every wave!

Energy & Production

Towers need power to fire—generate it using massive solar fields and deliver it to your towers via drones. Enemies drop resources that must be processed in various factories to level up your towers. Only a well-balanced supply chain will keep your defense strong.

Versatile Towers for Every Situation

Choose from melee, ranged, single-target, or area damage towers—each type excels against specific enemy classes. Combine them wisely, unlock special towers, and find your perfect defense strategy. Only those who adapt will survive the strongest waves.

No Game Over – Only Progress

This isn’t your typical tower defense! If you lose a wave, you’ll simply jump back to the last checkpoint—ready to try again. You never lose everything; instead, you push forward step by step. Every setback is just another step toward victory.

How much does This Isn't Just Tower Defense for PC cost right now?

This Isn't Just Tower Defense for PC starts at €6.47 at Gameseal, a Steam gift, which is 6% under the €6.89 it costs on the official store.

That €6.47 already includes the SEAL17CDK coupon, so apply it at checkout or the store will show you a higher price.

Just 2 stores stock it, 2 offers in all, so there is little here to push the price either way.

That puts it 6% under its average of €6.89 since 2025, so today is a better entry point than most days of its life.

Steam Key
€6.89
Stays on your account for good
Steam Gift
€6.47
with coupon €7.80
Pricier and more likely to fail

Is it worth buying the Steam Key for This Isn't Just Tower Defense now or waiting?

That €6.89 key is expensive for what it usually costs.

  • Those €6.89 are 9% above what it usually costs, measured on the store price.
  • Only 1 stores sell the Steam Key, and with that little competition the price barely moves.
  • Across the 265 days we have tracked it, it has only been pricier than today on 0 days. The lowest it has ever cost is €4.99.
If you do not need it today, waiting pays off: we have seen it at €4.99 and right now you would pay €1.90 more. We will tell you the day it drops.

Worked out from 277 daily records of the Steam Key for This Isn't Just Tower Defense across 1 stores. See the full price history.

The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.

Which This Isn't Just Tower Defense format should you buy?

By format: Steam Gift from €6.47 and Steam Key from €6.89.

Can you activate This Isn't Just Tower Defense in US?

All 2 offers are Global, so the code redeems on any account no matter where it was created.


Most common FAQs when buying This Isn't Just Tower Defense for PC in digital format:

It is a key that will allow you to download the game This Isn't Just Tower Defense on your PC from official download platforms.
As of 13/08/2026, in United States, the best price we have found in our selection of online stores that include the key for This Isn't Just Tower Defense on PC is €6.47.
The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download This Isn't Just Tower Defense to your game library. The account format requires more complicated steps and is more prone to errors during activation.
The only issue we’ve encountered in 13 years is receiving a duplicate key that doesn’t work. In that case, simply contact the store where you bought This Isn't Just Tower Defense, and they will provide a new key. You can also contact us, and we’ll help you out.
Delivery times vary by store. For example, in the case of Instatgaming, Eneba, G2a, or Kinguin, delivery is usually instant or takes just a few minutes. These stores rarely delay game deliveries.

Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.

If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.
At Gocdkeys, we only list the most well-known stores that have passed our quality checks. One of the most important factors is good customer support, and all listed stores offer it.

There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.

In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.

Need more help? Use our FAQs.

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About of This Isn't Just Tower Defense

Release date 10/23/2025
Users rating
0/5 (0 Comments)
Steam comments Mixed Mixed (122 Comments)
Categories
Strategy Strategy
Tags
Strategy Casual Singleplayer 3D Turn-Based Combat Combat Automation Atmospheric Bullet Hell Resource Management

Languages

English*, French*, Italian*, German*, Spanish - Spain*, Japanese*, Russian*, Traditional Chinese**languages with full audio support

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