The t-shirt deal of the day over at RIPT Apparel is the Doctor Who-inspired “Vortex Tardis!”

The tee, by artist zerobriant, went on sale at RIPT today, Monday, April 25, 2011, at midnight CST, and will continue for 24 hours from then, and once it’s over, it will not be sold on the site anymore.

See the image above? How would you like a chance to win that t-shirt? Well, now you can, as Geeks of Doom is teaming up with Gryphony for a Twitter contest where we’ll be giving 2 lucky winners one of this shirt!

To enter for a chance to win, retweet the following text on Twitter:

See full contest rules and deadline here below, along with details about the shirt.

About the Shirt

The shirt, called The Epic Battle Ends by artist zerobriant, comes in red in men’s and women’s sizes from small – x-large. Valued at $16.

The historic dispute between Ninjas, Robots, Zombies and Pirates will come to an end. With one single blow from a little blue man.

The $10 t-shirt deal of the day over at Teefury today is a mash-up of Doctor Who and The Who, by artist zerobriant.

The sale at Teefury began at midnight EST (Monday, February 28, 2011) and will continue for 24 hours from then, and once it’s over, it’s gone from the site for good.

The design takes some of the Doctors from the Doctor Who television series, including current Doctor Matt Smith, and turns them into classic rock band The Who. Look closely and you’ll find some familiar Doctor Who items in the design.

The t-shirt deal of the day over at RIPT Apparel is the Star Wars-inspired Valentine’s Day shirt called called “K9 Loves R2.”

The tee, by artist zerobriant, went on sale at RIPT today, Monday February 14, 2011, at midnight CST, and will continue for 24 hours from then, and once it’s over, it will not be sold on the site anymore.

The design has a robot dog K9 from Doctor Who falling in love with Star Wars droid R2-D2 because he thinks R2’s a fire hydrant. In the background, C-3PO finds the scenario amusing.

The t-shirt deal of the day over at RIPT Apparel is the Star Wars – Pokemon mash-up “Poked to Death.”

The tee, by artist zerobriant, went on sale at RIPT today, Thursday, January 6, 2010, at midnight CST, and will continue for 24 hours from then, and once it’s over, it will not be sold on the site anymore.

The t-shirt is available in men’s and women’s sizes in black for $10 each. Kids sizes are $15 (Boys, Girls, and Toddler, all black); Onesies are $18 (in black). You can also get the design on a Hoodie for $38 (in black in Men/Unisex sizes).

Also, if you make a purchase or leave a comment at RIPT on this product page today, and you’ll be entered for a chance to win a six-sticker pack of this design.