Sony kicks off its 13 for '13 promotion today, which means players can grab 13 PSN games at a discounted price. If you're a member of PlayStation Plus, they are 75 percent off, too.

The games include recent releases such as LittleBigPlanet Karting and the Unfinished Swan. Most importantly, Psychonauts is ridiculously cheap. If you haven't yet played it, you should feel contrite for a minute and then download it.

Here's a complete list of the deals, including their original prices, the discounted price, and then the PlayStation Plus price.

• LittleBigPlanet Karting $39.99 ($19.99 / $10.00)
• The Unfinished Swan $14.99 ($7.49 / $3.75)
• Ratchet & Clank $14.99 ($7.49 / $3.75)
• Jak and Daxter: The Precursor Legacy $7.99 ($3.99 / $2.00)
• Hot Shots Golf: Out of Bounds Complete Collection $24.99 ($12.49 / $6.25)
• Warp $9.99 ($4.99 / $2.50)
• Shank 2 $9.99 ($4.99 / $2.50)
• NiGHTS into dreams… $9.99 ($4.99 / $2.50)
• Jet Set Radio $9.99 ($4.99 / $2.50)
• The House of the Dead: OVERKILL Extended Cut $19.99 ($9.99 / $5.00)
• Psychonauts $9.99 ($4.99 / $2.50)
• Tiger Woods PGA TOUR 13 $39.99 ($19.99 / $10.00)
• Machinarium $9.99 ($4.99 / $2.50)

[Via the PlayStation Blog]