The game is not for Ukraine, not for the Crimea and any other region. You can check your region here: https://store.steampowered.com/account/
Activation is possible ONLY for Steam accounts from RUSSIA. In case of an error, you will need to change the account country to "Russia" through the "About account" section via VPN. Or make a new Russian account

Activation: Steam
Interface: Russian, English, French, German, Polish, Italian, Spanish, Czech, Danish, Dutch, Hungarian, Japanese, Norwegian, Portuguese, Swedish, Chinese, Turkish, Ukrainian, Finnish, Korean, Romanian
Genre: Indie, Simulators, Strategy
Developer: Ludeon Studios
Publisher: Ludeon Studios
Platform: PC, Mac, Linux
Release Date: October 17, 2018

♦ Game Description:

Sci-fi colony simulator under the control of an AI storyteller.
RimWorld manages three people who survived the crash of a space liner in the construction of a colony in the border world on the edge of the studied space. The sources of inspiration for this game are the spirit of the cosmic western Firefly, the deep study of the Dwarf Fortress and the epic Dune and Warhammer 40,000.
Watch your mood, needs, thoughts, injuries and diseases of the colonists. Participate in the deeply developed battles of small teams. Use clothes, weapons and equipment made of metal, wood, stone, fabric and exotic, futuristic materials. Fight raiders, hostile tribes, fierce animals and ancient killing machines. While playing, every time discover a new world. Build colonies in natural areas from the desert to the jungle and tundra, having their own unique flora and fauna. Manage your colonists and develop them with the help of unique biographies, traits and skills. Learn to play easily with an intelligent and unobtrusive AI tutor.
RimWorld is a game developed by Tynan Sylvester and Ludeon Studios. Since the first release on November 4, 2013 has been improved.

The usual price on Steam: 619 rubles.
 
👌 All games presented here are 100% licensed. They are permanently activated on your account and they will never be withdrawn. Guaranteed quality </ attention>
🚩 Attention!
In connection with the new rules of Steam, the game cannot be put into inventory. Purchase and delivery of games is carried out manually, directly to your account. To do this, you need to specify a link to the Steam-account in the field to the right (below the price).
We will add you as a friend and pass on the game. If you have an online operator, this will happen much faster) </ attention>
❗ Activation is possible ONLY for Steam accounts from RUSSIA.
If you make a mistake with the region, the game slows down, does not start, did not like it - the refund is not carried out. Please read before purchasing actual user reviews and system requirements on the game´s page in Steam