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.
I had several tanks designated reserve. Tanks I wasn't playing but didn't want to sell. This kept them out of my main garage list so I had less tanks to sort through. Now it looks to me like the reserve designation is no longer available. Is this correct? Am I missing something? Or am I so senile that I forgot the reserve designation came from some mod pack I used?