There is no way possible that you can go wrong with a great game like Shut Your Mouth.
The Season mode is probably the best place to start, where you select any superstar, or created superstar, and jump into a draft, where you can select wither RAW or Smackdown! and draft 10 superstars to be on the show. Or, skip the draft, and customize the rosters to your liking. Other than Here Comes the Pain, this game's sequel, this was one of the only Smackdowns! that allowed you to customize rosters. If Smackdown! VS RAW would've been like this, it would've been golden, and it shows, change isn't always a good thing. Anyway, back to this game. After the draft, you start immediately after Wrestlemania, and you start to engage in storylines, depending on which character you start with, and what their superstar points are. You can even start side-storylines by talking to superstars and divas backstage, where you roam around in first-person, and can even go outside in the street, into a boiler room, or even The World restaurant, and chat, or trashtalk, with others superstars. The level of depth is great, but roaming around kind of contradicts itself with all of the loading between rooms. However, with the multitude of storylines, as well as side stories and zillions of choices to make that alter your story, and a two year-long Season Mode (the longest in Smackdown! games for PS2), this is onw great Season Mode.
The gameplay is simplistic, yet fun. There are initial grapples, as well as catched grapples, from in front and behind, as well as extremely deep movesets that allow tons of moves. Submissions and pins, however, seem like a chance deal, since the stamina of a superstar is not displayed. Usually, though, you know you can pin an opponent by seeing them lay down flat. Submissions are too trial and error, though. There are multiple match types as well, with Single, Tag Team, Fatal 4 Ways, Triple Threats, in which all can be played in TLC, Table, Ladder, or Tornado (for Tag Team), Hardcore, and so much more. Playing this with friends is a blast in itself, and even playing alone is great, with A.I. that is intelligent, and adjustable in difficulty. There are minimal collision issues and glitches to be found here, too, making this game really fun.
The graphics are well done, for its time of course. The sound is okay, but a little annoying when the crowd starts making weird yelling noises when pulling off powerful moves (I don't know if it''s the crowd or the superstars; it's hard to tell). This can be overlooked, as well as the soundtrack, which consists of electronica/hard rock instrumentals. It's good, but not memorable in any way. In fact, some tunes may be somewhat catchy. As far as I can tell, the entrances are fine, but these were all from the season beforw I started watching wrestling, so I'm not sure. The rosters are quite deep, with mnay superstars and divas to choose from, as well as an incredible create-a-superstar mode, where you can customize your very own superstar in any way you like, and even create their moveset. You can slo create animations and stables, as well.
Clearly, this is where the greatness began for Smackdown! games, and many of the features in this game are still intact today. Of course, Here Comes the Pain is still the best Smackdown! game to date, but pick this game up if you haven't, as it's a good history lesson for the WWE, as well as good fun.