As far as massive sales go, GOG's Longest Day of Gaming event has about the same discount density as a white dwarf made out of Payless BOGO coupons. For the next 24ish hours, over 150 games have been discounted by up to 85 percent, covering everything from classic PC games, modern indies, big-budget AAA releases and sizable bundles of similar titles.

There's too much going on in this sale for us to list every single hot deal here, but we'd be remiss if we didn't at least mention that you can snag Fez, Dyad, Hotline Miami, The Witcher 2, Retro City Rampage, FTL, Waking Mars, Slender: The Arrival and every game in the Myst series for less than $10 each. The sale even includes Mac games - get up on this.