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.
me im saving up for elder scroll v skyrim dont know if its the legendary edtion... what about you? what are you saving up your gems for?