ReWired Mind and Games Domain has posted their reviews for the action/adventure on the Playstation 2, Prisoner of War. Here's a clip from the Games Domain review:
The emphasis in the gameplay is on gathering information and supplies, then using stealth and opportunism to get over fences, pick locks, steal equipment, or sabotage vehicles whilst avoiding the ever present threat of the guards. Other prisoners can be used to help (usually for a fee) and they will either follow you or distract the guards while you make your move. Rocks can be gathered, too, around the campsite, which can be thrown to send the guards in the wrong direction, or you can make a noise by banging on a wall for the same effect.