Steam's annual : $6.24 (Down from $24.99)

The community event works by using the summer sale badges that you can acquire by buying games on sale. You can also receive them by crafting game badges or trading with friends. Then, using those badges, you can join the "Monster Game" to "fight enemy monsters as you heelp your team level up, unlock new abilities, and achieve community milestones," as the Steam page explains. If your team does well, you can unlock discounts on games for the entire community.

The next set of flash sales begin in 12 hours.

Personally, I'll probably buy Metro Redux and the Homeworld Collection. What are you going to buy, or what games are you holding out for? Let us know in the comments.