Most Helpful Guy
Wow, great question. Never played Just Cause series, but I have played pretty much all Fallout and FC. Fallout and FC are both great series and you can go wrong with picking one or the other. Fallout wins by a small margin simply because of more variety. FC4 is basically a rebooted FC3. FC does start to get a bit repetitive after a while. Buy whatever is on sale, LOL!