They may not surprise most people, but not all games that are made in Japan make it out of Japan. Sure, they’re released there, but no one wants to spend the time and money to translate them and send them on their way to other countries. That, however, doesn’t mean that we don’t still want them.
The method is relatively easy to implement and involves installing a modded version of PSpocket and Pstore along with a quick tweak to the build.prop to change your phones internal model. From there it’s simply doing some navigation and it’s all yours. The entire game is in Japanese, so if you intend on reading anything in the game, you’re out of luck, but w4lkm4n has been kind enough to post a picture aided guide for those who can’t read Japanese so everyone can get it properly working.
If you’d like to play Loco Roco on your Xperia Play, despite its lack of English translation, check out the original thread for the full, step by step method, along with screenshots and download links for the modded files. As always, make a backup before attempting._________