Considering the size of my Steam backlog, I was very glad to hear this. You don't actually need to own a game to craft its badge you can simply trade for or buy the necessary cards on the Steam marketplace. After talking to the experts, I quickly discovered how wrong I was. Knowing these basics, I assumed that the way to get a high Steam level was to simply buy and play a boatload of games. The higher your Steam level, the better your chance of scoring a booster pack-every 10 levels grants +20% to their drop rate.