- PLATFORM
- Steam
- GENRE
- Action · Indie · Strategy
- RELEASED
- 2019
- DRM
- Steam
- STUDIO
- Stardock Entertainment
Buy Siege of Centauri Steam key
Defend against thousands of enemies in this explosive tower defense game. Deploy upgradable towers and unleash powerful orbital abilities as you try to protect Earth's first colony world from destruction.
PRICE DATA LAST CHECKED · SOME LINKS MAY EARN US A COMMISSION
BEST PRICE TODAY
$2.78
at Kinguin · Steam key · -81% off RRP
DE / EUR CATALOG · CONVERTED FROM EUR
Go to Kinguin → for Siege of CentauriCompare prices in official stores
Licences issued directly by the publisher or an authorised retailer. These cannot be revoked.
| Store | Edition | Price | Go to store |
|---|---|---|---|
 Green Man GamingOFFICIALMATCHED BY STEAM APP ID | Standard | CHEAPEST $3.00 | Buy Siege of Centauri at Green Man Gaming |
 SteamOFFICIALDIRECT STEAM LISTING | Standard | $14.99 | Buy Siege of Centauri at Steam |
Compare prices in keyshops
Third-party sellers reselling keys on a marketplace. Usually cheaper — read the key type and activation region before the price, then confirm the seller terms on the store page. Right now the cheapest keyshop listing saves $12.21 against the best official price.
| Shop / seller | Edition / key type | Price | Go to store |
|---|---|---|---|
 KinguinMATCHED BY STEAM APP ID Global | Steam key | CHEAPEST $2.78 | Buy Siege of Centauri at Kinguin |
 LoadedMATCHED BY NORMALIZED TITLE Global | Steam key | $3.49 | Buy Siege of Centauri at Loaded |
| Kinguin MATCHED BY STEAM APP ID NA only | Steam key | $4.50 | Buy Siege of Centauri at Kinguin |
Do not use a VPN to bypass activation restrictions; the account country may still be checked.
About Siege of Centauri
Siege of Centauri was developed by Stardock Entertainment. The release date was September 11, 2019. The genre is characterised as Action and Indie and Strategy.
Communications to Earth's first interstellar colony in Proxima Centauri have gone dark. In response, Earth has dispatched the Carpathia to investigate. Upon arrival, you find a colony under siege. Your mission: save the colony from these brutal alien invaders. Siege of Centauri puts you in command of the defense of Earth's first interstellar colony. Set in the Ashes of the Singularity universe, thousands of alien machines are attacking and only you, with your arsenal of deployable defense structures and strategic orbital abilities, can stop them. Customize the Carpathia in order to best handle the challenges of each individual mission, battle across the surface of an alien world through a series of story-driven campaigns or see how long you can survive in a doomed region where the enemy waves are truly endless. The enemy comes in all shapes and sizes, challenging you to counter them with the right defense in the right place. Siege of Centauri combines the best elements of classic tower defense games with the strategic depth Stardock has delivered in past titles, including Sins of a Solar Empire: Rebellion and Ashes of the Singularity. Features • Defend the colony on Proxima Centauri from hordes of alien invaders in a vast campaign full of challenging missions. Deploy defenses, use powerful orbital abilities, and call units at the right time and place in order to survive the onslaught. • Create your own missions using the workshop, then upload and share them with other players. Download new missions created by other users, too. • Customize your defenses using dozens of tower upgrades. Determine what you need in order to survive. Upgrade your particle cannon to slow its target, your Artillery Post to leave fire in areas it has attacks, or your Corrosion Mortars so that victims infect the allies around them. • Survive against unrelenting enemy waves in Endless Mode and see if you can outlast other players on the leaderboards. • Fight against dozens of enemies with unique attacks and defenses. Beware the Falling Star that disables defenses when it explodes, or the Heart of the Phoenix that forms a chrysalis when destroyed that can be reborn as a new Heart.
Siege of Centauri compatibility
- Steam Deck
- Unknown
- Linux
- Not supported
- macOS
- No native build
PC requirements come from the game's official Steam storefront listing. PriceSpawn does not estimate hardware requirements when a separate tier is not available.
MINIMUM
Minimum: • Requires a 64-bit processor and operating system • OS *: 64-bit Windows 10 / 8.1 / 7 • Processor: Quad-core Intel / AMD Processor • Memory: 6 GB RAM • Graphics: 2 GB GDDR5 NVidia GeForce 660 / AMD R7 360 or better • DirectX: Version 11 • Storage: 8 GB available space • Sound Card: DirectX Compatible Sound Card • Additional Notes: 1920x1080 Display Resolution or Higher; additional disk space will be required during Early Access
RECOMMENDED
Recommended: • Requires a 64-bit processor and operating system • OS *: 64-bit Windows 10 / 8.1 / 7 • Processor: Intel Core i5 or Equivalent • Memory: 8 GB RAM • Graphics: 4 GB GDDR5 NVidia GTX 970 / AMD R9 390 or better • DirectX: Version 11 • Storage: 8 GB available space • Sound Card: DirectX Compatible Sound Card • Additional Notes: 1920x1080 Display Resolution or Higher
Source: Steam store page
Where to buy Siege of Centauri cheap
Siege of Centauri launched at $14.99 in 2019. On the canonical US/USD baseline, the lowest confirmed-unrestricted total is $2.78 at Kinguin, which is -81% off the recommended price.
On that same baseline, official stores start at $14.99, so the keyshop route saves $12.21 on this title. That saving comes with a trade-off: keyshop listings are resold keys, and a listing marked as a gift is not a standard key. The key type column above tells you which is which.
Feed update times differ by store. Confirm the current price, product type and activation region on the store page before completing the purchase. Our comparison methodology explains matching, ranking and checkout-fee limitations.
Siege of Centauri — frequently asked questions
- What is the cheapest price for Siege of Centauri?
- On the canonical USD comparison baseline: $2.78 at Kinguin — -81% off the $14.99 RRP. Use the country selector for regional prices.
- Where can I download Siege of Centauri after the purchase?
- Siege of Centauri activates on Steam. After buying you receive a key or a direct licence, redeem it in the Steam client, and the game stays in your library permanently.
- Is it cheaper to buy Siege of Centauri from a keyshop or an official store?
- On the canonical USD comparison baseline, a keyshop is currently $12.21 cheaper: $2.78 at Kinguin against $14.99 at Steam. The keyshop listing is a resold key, so check the key type and region first.
- Is Siege of Centauri Steam Deck compatible?
- Steam Deck compatibility data is not available for Siege of Centauri yet.
- Can I play Siege of Centauri on Mac?
- No. Siege of Centauri has no native macOS build.
- Is Siege of Centauri Linux compatible?
- Siege of Centauri has no verified Linux support. Proton results vary and are not guaranteed.
