PS2 must haves

[Cheesebob]

Killer 7.

Although I dunno what its like on PS2, the Gamevube version is amazing

 

[Discord]

No Metal Gear Soild 2 or 3? (maybe even substance)

 

[-BloodRush-]

i really cant say anything that hasnt been said already, so i'll reiterate whoever said zone of the enders: the second runner.

one of my favorite games of all time.

 

[Aeshi]

I would recommend:

The Sly Cooper series
Beyond Good & Evil
Shadow of the Colossus
Any PS2 Armored Core Game (Try starting with 2 or 3)

 

[TriggerHappyAngel]

- Timesplitters 3 (best shooter ever! )
- DotHack//infection (and the 3 sequels, all great rpg's)
- Trapt (very unique gameplay)
- The Warriors (good arcade style beat 'em up gameplay)

 

[Slythernite]

I would be very careful with Dark Cloud, it's not for the impatient.

Oh, and I recommend the first Prince Of Persia.

 

[ffxfriek]

Mercenaries 1 was quite a hit with me, in fact that game was pretty damn good.
I can't think of any at the moment... Give me a while my brain is dead.

Time splitters is a must have! All 3 of them have their own merits.

This mercenaries 1 was amazing. one of my favorite games.

try lord of the rings return of the king it was an awesome game too

EDIT: battlefront 1 and 2. more amazing games
EDIT 2: FFX

 

[khaimera]

I'll just repost my last post. I enjoy beatmania and frequency. Although you need to get a cumbersome peripheral to play beatmania.

 

[DoctorObviously]

Woaaah owah owah!
Where the fuck is God of War? and Timesplitters?!

Also, GTA:SA & Tekken 5.

Please, don't get a seizure, it's a GAME, not the angel of god who will send us to the promised land.

 

[Dusquad]

Star Ocean Til the End of Time is really good I think. Just don't pay attention to the twist in the game...

It kinda ruins the series.

 

[Phoenixlight]

Timesplitters 2 and possibly 3, but 2 is great.

 

[axle 19]

Ratchet and Clank Series
Jak and Daxter Series
Tekken 4
Metal Gear 2 and 3
Soul Caliber 2
Resident Evil Essentials
Vice City

 

[K84]

Hmm, most of what i'd mention, is already mentioned...
Still, get God Hand, it's awesomesauce!

 

[The Rockerfly]

Final Fantasy X if you want a damn good JRPG

You've got one hell of a game for your collection right there.

Dammit I loved my PS2, best years of my life was on that thing, plus I have a ton of games that the OP mentioned and I didn't mention