Cities: Skylines II (Ultimate Edition) (Steam)

The Standard Edition includes the base game only. The Ultimate Edition adds the Bridges & Ports expansion, the San Francisco Set, five Creator Packs (Dragon Gate, Leisure Venues, Mediterranean Heritage, Modern Architecture, Urban Promenades), and six radio stations.

1. Open the Steam client.
2. Click "Add a Game" in the bottom left corner.
3. Select "Activate a Product on Steam" from the dropdown.
4. Enter the code and follow any on-screen instructions.

Your key is delivered instantly after purchase. Once payment is processed, the key will appear in your account dashboard, ready to reveal, copy, and activate through Steam.

Yes. GameBoost is a verified marketplace rated Excellent on Trustpilot with over 18,000 reviews. Every purchase includes instant delivery, 3% cashback in GB Coins, and 24/7 live chat support.

You are eligible for a refund if the key has not been revealed and a valid refund reason is provided and approved by GameBoost, if the delivered key is not as described (wrong edition, wrong platform, or cannot be activated in your country despite being listed as compatible), or if the key is invalid or duplicated. You are not eligible for a refund if the key has been revealed and redeemed successfully, if the key works correctly and matches the product description, or if you do not like the game or changed your mind. Contact GameBoost's 24/7 live chat support for any refund requests.

This is a Steam key, not an account. You activate it on your own existing Steam account and retain full ownership of the game permanently.

This key is available in multiple regions. Select your region at checkout to confirm availability for your country. If you are unsure whether your country is supported, check the activation details on the product page before completing your purchase.

Bridges & Ports introduces functional ports and harbors that connect to the city's transport network, a Marine Industries system generating trade and shipping along waterways, new bridge types including drawbridges, lighthouses, and other coastal infrastructure. The expansion adds over 100 new assets alongside the new gameplay systems.

Each Creator Pack adds a set of buildings and assets with a distinct visual theme. Dragon Gate covers Chinese-inspired market quarter architecture. Leisure Venues adds recreational buildings. Mediterranean Heritage brings European warm-climate architectural styles. Modern Architecture covers contemporary building designs. Urban Promenades adds promenade and pedestrian streetscape assets. All Creator Pack content is cosmetic and does not change the game's simulation mechanics.

Yes. Cities: Skylines II is available on Xbox Game Pass for PC. The standard edition is accessible to subscribers through their membership.