Story. Juggernaut is hard to describe. The word "eerie" does capture it, but it's a game you just have to play. You are a nameless character and your girlfriend has been possessed by an evil ghost. With the aid of a priest, you have to enter her spirit and remove the blight. So, this game takes place in a sort of dream world.
Control. Juggernaut is a point-n-click game. Between clicks, a short animated sequence plays (sort of like in D). Even though this is a point-n-click game, moving around rarely is slow. The clicks get you to places pretty quickly.
Mood. There are no enemies in Juggernaut (except at the end.) You are alone most of the game as you explore an empty mansion that represents your girlfriend's soul. From time to time, you hear her voice. Your challenge in the game is solving puzzles. There are many good riddles in Juggernaut, but they are not too hard that you need a guide. Also, there are eight side-stories that you play. Imagine having a dream inside a dream. That's what these bizarre side stories are like. You aren't yourself anymore, which just makes the game weirder. In the main story mode, you must also pass between three different incarnations: a free spirit, a man and a homunculus.
Puzzles. Great, spread throughout the whole game, but not too hard.
Ending(s). Is it worth it? Yes. Juggernaut has a good, satisfying ending.
Graphics. It's a 3-D world that looks pretty good. I played it on an HDTV and it wasn't too bad.
Music. Decent. I found myself humming the main tunes a lot.
More. Juggernaut is 3 discs and fairly long as far as PSone games are concerned. You'll spend a lot of time switching back and forth between discs so don't let someone borrow your disc one until you're done with the whole game!
The greatest thing about Juggernaut is that even though it is a lesser known horror based game, it is not that rare or expensive. You can probably find a complete one for under $15. If you like problem solving and strange, quiet settings, you should check out this game.