can anybody make a good zombie game that is actualy decieant?
I think that the theme and storyline are a problem, it's really hard finding an unusual idea about that and also making an amusing and challenging game.
If you want a decent zombie Flash game try Last stand 1&2 or Endless Zombie Rampage.
If you are looking for a decent Video/Console game try any game from Resident Evil series or House of the Dead series.