If you want a more friendly, relaxing, fun expirience, then go with Mercanaries 2. But a more series game is Just Cause 2. Just cause 2 DOES have planes and helicopters, as Mercenaries only has helicopters. But Mercenaries has all the amazing airstrikes and has more destruction. The vehicles are more amazing in Mercenaries 2. The Zipline feature of Just Cause 2 deffinetly has it's perks. But both is a good buy. I have both. I stopped playing Just Cause 2, but never stopped playing Mercenaries 2. Mercenaries 2 seems like the better game too me.