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Exploring Tetris' dark side, and what's at stake in the PS4 slimdown? (Open_Tab Ep. 15)

CNET's Dan Ackerman unveils his new book "The Tetris Effect" and we analyze Sony's revamped PlayStation 4.

Tetris is much more than the sum of its blocks, and CNET's Dan Ackerman has just released a book all about "The Tetris Effect." Ackerman came by Open_Tab to answer questions about the game of Tetris.

Following this, Jeff Bakalar is back in the hosting seat this week and will talk about his experiences trying out Sony's new, slimmer edition of the PlayStation 4 console. Have any questions about the new system? Get them into the comments as well.

You can also follow @CNETOpenTab on Twitter for a chance to win a signed copy of "The Tetris Effect" by clicking this link and following our account. No purchase necessary. For legal residents of US that are 18 or older. Void in Puerto Rico and all other US Territories, Possessions, and where prohibited. Sweepstakes ends on 9/30 (before next week's show). Official rules can be found at http://bit.ly/2daRmyG.

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(L-R) The US and UK editions of "The Tetris Effect" by Dan Ackerman.

Mike Sorrentino/CNET

Want to get involved in Open_Tab? We go live on CNET's Livestream and YouTube pages on Fridays at 3 p.m. ET, 12 p.m. PT and 8 p.m. UTC. Send in your questions and comments for our show either by dropping a line in the comments of this article, sending a tweet using #OpenTab, by joining the live chat on Livestream or YouTube during the broadcast or send an email to us at opentab@cnet.com.