tournaments and multiplayer games

Hi,

What are tournaments and how do they work?
Can any game be used for a tournament ?

Right now, in my forum, any register member can play a game.
I am thinking of using vbplaza as the points system.

What I am looking for is to utilize the tournament section of the ibproarcade.
Users will need certain XXX amount of points to enter and play the game, and some sort of a jackpot system.

If someone may please explain how do I get the games and start, it will be great.

Also, are there any multiplayer games or games that can be played in real time ?

Thanks,