Most underrated game of all time must be Deus Ex: Invisible War. Got destroyed when it was released, but it's actually a really good game. No where near as good as the original, of course, but it still holds its own. 



I recently downloaded it for pc (running in dosbox) and it just doesn't feel as nice...the controls are too jerky, everything is too light and clean. But on the playstation, it still feels great!







Its like playing online and it's better than online as the AI is way better team work and if your in a helo and say bail out they will bail out not just some or none. So i highly recommend it as i can't stop playing it.