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About Circuit Defense

Circuit Defense - about the game

This is a strategy game rooted in classic tower defense. Enemies approach your base from all four directions, following fixed paths toward the center. Your goal is to construct defensive towers around the base and stop them before they break through your defenses.

What sets this game apart from traditional tower defense is its core mechanic: the Power Grid system. The rules are simple:

  • Power lines expand outward from the base, forming a grid.

  • All building modules must be connected to the grid in order to function.

  • The more powered connectors a building has, the stronger it becomes. Each additional connector grants a 100% attack speed bonus.

Under these rules, how you design and expand your power grid becomes the heart of the strategy. Power lines themselves occupy tiles on the map, so you need to carefully manage space while extending electricity to your buildings. You also need to plan ahead and leave connectors available for future expansion.

Different towers have different numbers of connectors, and each additional powered connection provides a significant boost. Because of this, fully powering a single tower using cheap power lines is often more effective than simply building more towers.

However, buildings placed along enemy paths can be attacked and destroyed. This means your power lines are vulnerable as well, and protecting your grid becomes an important part of your defensive strategy.

In addition to the power grid system, the game also includes several supporting mechanics to deepen the gameplay:

  • Building Synergies – Some modules provide bonuses to nearby structures, such as buff modules with area effects or resource modules that gain benefits when placed next to each other.

  • Active Skills – For example, Overclock, which temporarily boosts the global attack speed of all towers.

  • Fog of War (Experimental) – Some towers can shoot farther than they can see. Enemies must be inside revealed areas to be targeted, so radar modules are needed to expand your vision and unlock the full potential of long-range defenses.

In this game, success isn’t just about building more towers. Carefully planning your power grid, managing space, and protecting critical connections are the keys to building an effective defense.

Interface:
EnglishSimplified Chinese
Subtitles:
EnglishSimplified Chinese

Age rating

Unavailable

Minimum:

  • OS: Windows 10 (64-bit)
  • Processor: Intel Core i3-6100 / AMD FX-8350
  • Memory: 8 GB RAM
  • Graphics: NVIDIA GTX 960 / AMD Radeon R9 280
  • DirectX: Version 11
  • Storage: 1 GB available space

Recommended:

  • OS: Windows 10/11 (64-bit)
  • Processor: Intel Core i5-10400 / AMD Ryzen 5 3600
  • Memory: 16 GB RAM
  • Graphics: NVIDIA RTX 3060 / RTX 4060
  • DirectX: Version 11
  • Storage: 1 GB available space
Historical low
Price history from official stores
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FAQ

8 questions

Before you start looking for a cheap Circuit Defense PC key, check the essentials. Developed by LUO JUNLIN. Published by LUO JUNLIN. Genres: Strategy, Indie. Categories: Family Sharing, Single-player.

Q

Where to buy a cheap Circuit Defense Steam key or CD key?

There are currently no active offers for Circuit Defense. Set a price alert on XD.deals and we will notify you the moment a deal becomes available.

We don't have a current Steam Store price for Circuit Defense. The game may be temporarily unavailable or not yet listed on Steam.

Our price tracker covers both official retailers and key marketplaces, so you can find Circuit Defense on sale even outside seasonal promotions. We currently detect 0 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, Circuit Defense is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

Yes. Circuit Defense has an official page on the Steam Store, but we currently don't track any third-party offers with Steam DRM. Check back later or set a price alert.

Not at this time. Valve marks Circuit Defense as Unsupported on Steam Deck. Keep an eye on XD.deals - we track Proton updates and community fixes. Browse games that are Steam Deck Verified or Steam Deck Playable.

Circuit Defense does not appear to be available on PC Game Pass, EA Play, Ubisoft+ or any other PC subscription service at this time. Your only option is purchasing the game - use XD.deals to find the best price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best Circuit Defense deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

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