video game competitions

I recently saw a story on a tv show abou9t videogame competitions.the tv show was called sunday night and airs in south Australia on sundays.so i went to their website to find out where these competitions are held and no luck.i red several articles about world wide video game competitions but coundn't find any info as to how to enter these competitons or where there held.I even red through about 20 pages of stuff about them after doing a google search.Can anyone post a link or let me know where some of these competitions are held and how to enter????

P.S.im in Australia so information on australian videogame contests would be more usefull.