There are a number of games for the PS2 and PSP, but could not identify any PS3 games
Phantasy Star Online 2.
Not possible. On a sidenote, you can't play any Phantasy Star, including console versions, without paying a monthly fee. Phantasy Star is a P2P download game, sorry. If you can't download anything I recommend Earth Eternal, it's an AMAZING mmorpg in your browser.
There are games that have zombies as characters for PS3
Yes all PS3 can play any PS3 games if the have current updates which includes the latest 3D games
No, there are no halos for the ps3
yup
No, there are no Pokémon games on PS3 or any other non-Nintendo console.
Yes and No depending what ps3 model you have! If it has 2 usb ports it can only play ps1 games. If you have the ps3 slim it can't play any ps2 games no matter how many GB it has. Any ps3 can play ps1 games! ps1 and ps2 games can be saved on to the ps3 As long as you have the memory card adapter. You can only save ps2 games on the 20gb and 60gb and 80gb which have 4 usb ports! You can save ps1 games on any ps3 even on the slim.
No
Phantasy Star Universe. It, like WoW, requires a monthly subscription that comes with a fee of about $10.
You can play any type of ps3 games on an English ps3.
PlayStation 3 games do not have region lockouts. You can play PS3 games from any region on PS3 systems from any region. Regions do not matter, so you can use a PS3 from any region anywhere.