Good game. with a few more elements it coulda been a great game but still good enough to have fun and kill time.
The freedom in this game is phenomenal, allowing you to rampage like a little Godzilla from one end of a lush tropical paradise, to the other. Jumping from vehicle from vehicle, once mastered, will allow you to zip around at maddening speed. And overthrowing government controlled towns and drug-lord HQ's is a real blast!
The only downside to this game is that a vehicle stealing missions are painfully unbalanced. In these, you need to steal and bring back a speical vehicle in one piece. This is nearly impossible, as everything damages your vehicle. This game is very much bent on allowing you to destory everything, not keep anything in one piece. It's often easier to jump out of said vehicle, go back on foot, and take out the 20+ jeeps, helicopters, tanks, and generic soldiers with just a machine gun and some cheezy one-liners, then even bother trying to drive.
The game is also a bit low on the challege side of things. The only things in this game that will even remotely threaten you are the occasional heat-sinking missile and slow drivers. The missiles tend to sneak up quietly and without warning, blowing up you and your aircraft instantly, without warning. The slow drivers, on the other hand, are just a game glitch. When you get hit by a vehicle, the game not only takes in account the speed of the vehicle, but also the amount of time you touch it. So if somebody runs into you VERY slowly, like a peasant in a truck, they can grind you to death faster then taking 20 speeding jeeps to the face! This makes stealing vehicles a bit more hazardous then it really should be.
Other then these minor problems, the game is awash with amazing visuals and insane combat. It's like taking a vacation to the Caribbean, only with guns. If you like beautiful, free roaming, treasure hunting, and GTA-style F***ing with people type of games, you'll love Just Cause.