XCOM: Ultimate Collection includes:

XCOM Enemy Unknown
XCOM: The Enemy Within
XCOM: Enemy Unknown - Elite Soldier Pack
XCOM: Enemy Unknown - Slingshot Pack
XCOM® 2
XCOM 2: War of the Chosen
XCOM 2: War of the Chosen - Tactical Legacy Pack
XCOM 2: Resistance Warrior Pack
XCOM 2: Children of Anarchy
XCOM 2: Alien Hunters
XCOM 2: Shen's Last Gift
XCOM® Chimera Squad

Winner of dozens of Game of the Year awards, XCOM: Enemy Unknown is a modern remake of the classic and beloved original XCOM.

XCOM Enemy Unknown

Take control of a secret paramilitary organization called XCOM. As the commander of XCOM, you will defend against a terrifying global alien invasion by managing resources, advancing technology, and overseeing the combat strategies and tactics of individual units. Boost your defenses with the XCOM Expansion Pack: Enemy Within, Slingshot Pack (DLC), and Elite Soldier Pack (DLC)


Key activation:

1. You need to download and install Steam http://steampowered.com/download/SteamInstall.msi (if not already installed)
2. Register a new account on Steam or log into an existing one.
3. Go to the "My games" section and select "Activate via Steam" and enter the key received immediately after payment.
4. After activation, the game will appear in the list of games and you can download it from Steam.