Edible Vomit endures as my favourite ZZT game of all time. It has a depth which one generally does not come to expect from drac0, taking Teen Priest and other such games as an example.
You are Freddy the Ferret, a rodent heroin junkie on the quest for the perfect drug, wandering through a trippy (and superbly drawn) ZZT world. Along the way you will administer marijuana to a rabbit, steal a toke from a nine-year-old, yell at a 'wounded wanker,' and bash hell out of a statue of a child, using a hammer.
Typical drac0ism? Not so. As you near the end of the game it becomes very clear that there is some very deep meaning here. Whilst not exactly subtle it is nevertheless very effective; the use of drugs is finally called into question.
With basic but appropriate and effective music, superb (and in my opinion anachronistic) graphics, and a very emotive storyline interwoven with the drac0isms we all know and hate/love, Edible Vomit is without a doubt one of the greatest ZZT games ever made.
And, hell, you've got to love a game starring a rat named Stinky who does too many white lines and likes doing weird stuff to dead guys.