I'm about 2 weeks late in posting this video. The game was waiting on my desk at work when I came back from my vacations a few days ago, and I only now managed to play the game enough. Sorry about the delay!
Just Cause is one of those games you either like a lot, a just can't stand. Personally I'm enjoying every minute of it, no thanks to its incredible engine and the "over the top" gameplay. The demo wasn't that interesting, but the final game was much better for me.
As you can see in the video, Just Cause is incredible visually. Avalanche Studios really did an amazing job with the game engine, capable of displaying kilometers of ground, trees, sea, rivers and a beautifully animated sky with realistic clouds. And even if there are still some pop-in issues, this is still an impressive technical feat.
the gameplay is a bit more tame, but for me the free fall is still as fun as during the first minutes, I just love seeing the ground getting bigger so quickly and opening the parachute at the last moment. The gunplay is ok, with a classic but nicely working targeting system, and the vehicules can be handled correctly immediately.
The real problem with Just Cause is to keep playing until the end, as the story isn't really interesting, and the mission variety isn't exactly impressive either. Only the pleasure to find new place and new vehicles will keep you playing. Either it's enough for you and you'll enjoy the game completely, or you'll stop playing after a few hours.
As a bonus, I've also included an amazing video showing a full day/night cycle. It normally takes 30 minutes, but I've accelerated it to a bit less than 2 minutes. It's simply beautiful.