Quite a few online players are having trouble accessing this game, because the PS 3 keeps making them download long patches. When you do get the online game to work, it lags.
Offline, the game works fine, is a lot of fun and is very pretty, with Vegas sites from the fake Eiffel Tower to velvet-red theaters. You play as a highly trained anti-terrorist agent who kills baddies invading Vegas.
The beauty is how well it's all structured. Every time you turn a corner, you must be prepared for another dumb terrorist to shoot at you. To combat this, you lean against walls and peek first, then strategize your approach.
Even if you can choose to play the "casual" difficulty level, Vegas 2 is quite daring. You have to kill a lot of terrorists in many corridors before the game saves your progress.