This year they are having a problem in that there doesn't seem to have been enough games submitted. At the moment they especially want tabletop roleplaying games, so if you've always been wanting to run something, now is your chance.
Unicon is a perfect convention for people wanting to try their hand at writing and running games at conventions, since it's a smaller con than the other major Melbourne cons. So, give it a go!
To submit a game, log into AON, sign up for the convention and put the details in.
Go on, you know you want to!