The PS2 game Urban Chaos: Riot Response (not related to the Urban Chaos fpr PC) is a FPS where you assume the role of a zero tolerance enforcer called Nick Mason. In a chaotic city you got to fight against tons of gang members to free your city from chaos.
It's a very good game. It has many weapons
(List: Riot Shield; Stun Gun (Taser-like too); Tactical Pistol (with scope is unlockable); TAR-21; G36C with Grenade Launcher (unlockable); a Sawn-Off shotgun; an Automatic Shotgun; and more!)
Is a game with minor publicity. That is why I call an underrated treasure. PS2 fans: be sure to check that out.
I think I played a demo of that game one time and I have to agree with that it was interesting. I also managed to see it in a Fred Meyer store and I wanted to get it. I got something else though, Hitman: Blood Money, which was good to. After I left the store, never saw that game again. I don't bother with PS2 games anymore because I sold my PS2.