Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
Company of Heroes 2 is free to download and keep forever on STEAM! Promotion ends on Sunday, November 17th at 10am PST /6 pm GMT.
https://store.steampowered.com/app/231430/Company_of_Heroes_2/