Pecko is less a game than a DOS oracle. You type in a question, Pecko answers, and if your sentence does not end in a question mark you get an insult instead. It is a tiny 16-bit DOS program with no graphical ambitions whatsoever.

It appeared in Serbia in 1996 and circulated on floppies among schoolchildren, which was the normal distribution channel for this kind of thing. The appeal was never the mechanics but the tone and the language; it is the Serbian counterpart of the joke utilities hobbyists wrote all over Europe at the time.

Software like this tends to survive by accident, because nobody at the time considered it worth archiving.