Note, these deals are valid only for today, Tuesday, January 25, 2011, until midnight PST while supplies last.
From the product pages:
Guitar Hero: Warriors of Rock [see product page for the full list of songs included]
* Game only – Guitar Hero controllers sold separately
* Includes over 90 tracks in a rock-centric set list featuring Queen, Black Sabbath, KISS and many more, the biggest on-disc selection of rock music ever in a Guitar Hero game
* In all-new Quest Mode, embark on an epic rock journey as eight Guitar Hero characters transform into rock warriors who must join together to use their unique, game-changing powers to help the Demi-God of Rock save rock n’ roll.
* Use any two unlockable warrior powers in the new Quickplay feature to earn high scores, new unlockables and rewards in 13 totally unique gameplay challenges.
* Play any combination of guitar, bass, drums and vocals in fan-favorite modes like jump-in/jump-out Party Play, various competitive modes and more for a complete interactive rock experience
Tony Hawk: Shred
* Just step on the board and SHRED. No complicated button controls to master. Just step on to SHRED through awesome modes including Trick, Point Rush, and Challenge!
* Go big! Clear huge gaps, perform over-the-top tricks during massive drops, and ride out roller coaster grinds!
* All new snowboarding: Feel the rush as you speed down mountain peaks filled with breathtaking big airs, crazy spins, and incredible flips!
* Control the action with your feet with the Tony Hawk RIDE or new Tony Hawk SHRED Board Controller
* Includes game only; Tony Hawk Board Controller sold separately