Cartridge Defense
Cartridge Defense is a tower defense game with over 300 distinct collectible cards that you will use to create your own decks to defend against robots in the cyberpunk inspired future. Play cards (cartridges) to spawn towers, upgrades, special abilities and more in a campaign or rogue-like mode.
Offers
What are keyshops?Keyshops
Third-party resellers. Often cheaper, without official store support. Keyshop prices vs Steam →
Demo (1)
Try this game before buying.
About Cartridge Defense
Place towers to repath the enemy robots, set the priorities of towers with a highly customizable set of targeting systems, and watch waves of enemies get destroyed by your maze of towers. Each enemy has a chance of dropping loot in the form of cards, packs, targeting systems, items or resources you can use to customize your deck.
There are currently 9 tower types, each of which can be upgraded to level 5 and over 300 distinct cards, ensuring massive amounts of variety and replayability. Unlock cards, targeting systems and playable items by progressing through the story against specific spawn lists or farming completed levels with randomly generated spawns in 'Sponsored Mode' for bonus loot.
There are currently 33 levels across 5 zones for an expected 30-40 hours of gameplay. Additionally, the game includes an endless mode and a rogue-like mode for even more replayability!
Game details
Game details
Age ratings
Game modes
Languages
Cartridge Defense price history
Lowest tracked price: £0.39 (Jul 7, 2026) · current best: £0.39 across 2 stores.
Cartridge Defense player count & reviews
92% positive reviews all-time · 2 peak players in the last 30 days.
Cartridge Defense — frequently asked questions
Where can I buy Cartridge Defense at the cheapest price?
Right now the cheapest offer for Cartridge Defense is £0.39 at Gamivo. KingsPrice compares 2 offers from 2 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price Cartridge Defense has ever been?
The lowest price KingsPrice has tracked for Cartridge Defense is £0.39 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
How many people play Cartridge Defense?
Cartridge Defense peaked at 2 concurrent players on Steam in the last 30 days (highest on Jul 17, 2026). The player chart on this page updates daily.
Is it safe to buy a Cartridge Defense Steam key from a keyshop?
Keyshops are marketplaces that resell game keys, usually below official store prices. The keyshops listed on KingsPrice deliver genuine Steam keys, but buyer protection differs from official stores — check the shop's rating and refund policy before buying. You can hide keyshop offers at any time with the keyshops toggle. Keyshop prices vs Steam →
How can I get Cartridge Defense at a discount?
Create a free price alert on this page and KingsPrice will email you when Cartridge Defense drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- OS *: Windows 7
- Processor: Intel Core i3 6100 / AMD FX-4350
- Memory: 4 GB RAM
- Graphics: NVIDIA GeForce GTX 770 (2GB) / AMD Radeon R9 270X (2GB)
- DirectX: Version 11
- Network: Broadband Internet connection
- Storage: 2 GB available space
