Have you not been paying attention to the downloadable space on the Xbox 360? There are some amazing games in the Xbox Live Arcade. Three of which are going to be a lot easier to obtain though the magic of physical media!
Twisted Pixel CEO Michael Wilford revealed an Amazon listing on his Twitter account. Wilford originally commented that a retail bundle consisting of Limbo, Trials HD, and Twisted Pixel's 'Splosion Man was originally head to Japan. Of course, the Amazon listing Wilford linked to means the retail pack will be available in North America as well.
Amazon priced the pack at $29.99 which means you'll save $5 by purchasing all three games together. Microsoft confirmed that the game will land on April 19th in stores and online. Nestled somewhere in the pack will be a 48-hour Xbox Live Gold code and 160 MS Points.... which you can buy... like... nothing with.