Pokemon Solid
In MGSPO you have to recruit your own army of soldiers you do this by knocking them out or putting them to sleep, either drag them to your truck or move close to a team Member hiding and using your codec to capture them. there are differant things that each Soldier can give you. like weapons, and items. also there are Differant looking Soliders and the more you use them in your main team depends on how strong they get for Multiplayer.
MGSPO Takes this approach and it almost feels like your collecting pokemon but with guns and Magazines. it's really fun. the GFX are great and the music and atmosphere is great. the Cutscenes are kinda like Anime and are kinda differant from Past MGS games but it works good and has the same delivery as any past MGS games.
If your a new PSP owner i highly recomend this game as your first games it's an amazing title that will give you infinite hrs of gameplay seeing how the Online mode is so fun and the Soldier collections really adds to the Online more than the Offline.