Metal Gear Solid: Portable Ops ( メタルギアソリッド ポータブルオプス , Metaru Gia Soriddo Pōtaburu Opusu ) (commonly abbreviated to MPO ) is a stealth game directed by Masahiro Yamamoto, with series creator Hideo Kojima acting as a producer. Portable Ops was developed by Kojima Productions and published by Konami in 2006 for the PlayStation Portable . It is the third Metal Gear title for the PSP and the first one to retain the series' action-based gameplay .
It is also the first canonical outing of the series for a portable platform, following the storyline of Metal Gear Solid 3: Snake Eater .
Now playing this, the next game in the series, sequel to Snake Eater. Doesn't feel like a pure MGS game, but it's actually pretty good, some very interesting mechanics.