Here's a good reason to take your PlayStation Vita with you when you leave the house.

EastAsiaSoft has announced that the portable iteration of the critically acclaimed strategy/RPG, Rainbow Moon , will be available in North America on December 3, and a day later in Europe and Southeast Asia.

The Vita version features cross-save support so you can exchange your saved data whenever you wish. It also boasts "lots of updates and improvements," and well over 50 hours of old-school adventuring goodness. It was further revealed that if you already own the PS3 version and you want to purchase the Vita installment, the latter will be discounted. No word on the discounted price just yet, but it's still good news.

Rainbow Moon is one of those games that's just extraordinarily difficult to stop playing. Trust me.