A Castle Doombad Classic 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 €0.30 (-97%) at Kinguin, 97% below the €9.75 Steam price · 5 verified stores, 6 offers in stock · Updated 03h 14min ago.
BAD IS BACK! Castle Doombad is the treacherous strategy / Tower Defense puzzler where you play the villain and must defend against the pesky heroes so-rudely invading your evil lair.
This Classic edition includes the original Castle Doombad from 2014, newly rebuilt and remastered from the ground up, plus the addition of brand-new content and features.
Slay the good guys with your choice of over two dozen delightfully devious traps and minions! Strategically mix-n-match your arsenal with wicked weapons that fire automatically and manually-activated traps that require precision timing to pack a painful punch! Unlock and upgrade your traps, troops, and castle on your quest to become the baddest of them all!
Break Bad and defend your dark domain across 75 puzzling stages, or take on the nefarious new roguelite mode: Dr. Lord Evilstein's Roguevenge!
In this new mode, the challenge is ramped up, and no two attempts are the same. Choose how your castle expands as you advance, grow your trap arsenal during each run, and collect mighty Nightmare powers to make the heroes pray for a quick Game Over...
Collect loot from fallen heroes to deck out your Dark Lord and his control room! Each item includes a Baddie Bonus upgrade -- but your equipment spots are limited, so prepare to tinker with different diabolical builds.
Includes the original Castle Doombad from 2014 remastered and rebuilt from the ground up -- with no ads and no IAP!
Play the original 75 puzzling stages, or try your evil hand at the challenging new replayable roguelite mode!
Unlock an antagonistic arsenal of 29 traps and over 150 upgrades!
Customize your Dark Lord and your control room with new equipment and cosmetics, or collect reskins for your traps and troops
For the first time, play the original Castle Doombad with a mouse+keyboard!
Play on Steam Deck with touch screen controls (button and joystick support coming soon)
Earn sinister Steam Achievements!
New villainous content coming with free future updates!
Add Castle Doombad Classic to your wishlist now to receive updates, or keep up with development by following one of our social media accounts or joining our official Discord Community.
Castle Doombad Classic is from the team that brought you Steven Universe: The Light Trilogy, Super Mole Escape, Teeny Titans 1+2, and more!
Castle Doombad Classic for PC starts at €0.30 at Kinguin, a Steam key, which is 97% under the €9.75 it costs on the official store.
That €0.30 already includes the AUGGOC10 coupon, so apply it at checkout or the store will show you a higher price.
Supply is thin — 6 offers from 5 stores — and thin supply keeps prices steady rather than falling.
That puts it 12% under its average of €0.34 since 2025, so today is a better entry point than most days of its life.
That €1.19 key is at one of its best prices.
Worked out from 64 daily records of the Steam Key for Castle Doombad Classic across 2 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.
By format: Steam Key from €0.30 and Steam Gift from €9.53.
All 6 offers are Global, so the code redeems on any account no matter where it was created.
One listing is worth ignoring: the Steam key that Steam has at €9.75 is more than 32 times the cheapest offer and is not what this game costs. The number to work from is €0.30 at Kinguin.
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