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.
So now that we know tier 6 is coming out, what exactly do we have to look forward to in the sense of grinding to get them? how many tier 5 tanks do we need to be able to start research on them?