The copy on the back of the Duck! inlay said:
Farmer Tubby is out to bag a few ducks, and maybe a swan for his dinner. His trusty blunderbuss is small comfort against some of the zany hazards and surprises he encounters. Can you help him? This is the daftest, funniest duck-shoot of them all. A sense of humour is essential!
Duck! was released in a standard cassette case. As with all of the original £2.50 budget releases, the cover featured a single screenshot from the game.