PlayStation Plus subscribers get Metal Slug XX
The Instant Game Collection gets a well deserved recruit as Sony adds Metal Gear XX to the roster of free games for both the PlayStation Portable and PlayStation Vita.
Metal Slug XX is an altered version of Metal Slug 7 on the Nintendo DS which features additional ad-hoc co-op and mini-games on top of the core DS game. The asking price for the game for those without PlayStation Plus is $20.
source US PlayStation Blog
