Earlier this afternoon, Valve began its annual Steam Summer Sale, discounting many games on its catalog. Every 8 hours, a new flash sale begins that discounts certain games even more, as well as daily deals that do the same. Buying and voting on what games go on flash sale go towards earning cards, which in turn can create the Summer Adventure Steam badge. These can earn players in-game items, profile backgrounds, as well as the chance to win games on wishlists.
The Steam Summer sale goes until June 30th.