As suspected, the Steam Summer Sale has officially kicked off today, and as expected the site has some incredible deals on popular games. Also, as expected, the site is getting hammered, so you might have to refresh several times to see the deals.

Some of the better ones we've seen:

• Guardians of the Galaxy - Telltale Games - $16.74 (33% off)
• Rocket League - Psyonix - $11.99 (40% off)
• South Park: The Stick of Truth - Ubisoft - $7.49 (75% off)
• Torment: Tides of Numenera - InXile - $22.49 (50% off)
• Call of Duty: Infinite Warfare - Electronic Arts - $29.99 (50% off) - More deals on the various deluxe editions
• Middle-Earth: Shadow of Mordor - Warner Bros. Interactive - $3.99 (80% off)
• Mafia 3 - 2K Games - $14.99 (63% off)
• Superhot - $14.99 (40% off)
• Hyper Light Drifter - $9.99 (50% off)

There are plenty more sales for today, so head over and see what specials you can get on your favorite games.