Duck! is another simple arcade game that was obviously inspired by coin-op games like Space Invaders and Galaxians, but with ducks! The game is described by Firebird as a Musical Comedy.
The game gives the player three lives at the start, and a bonus is on offer if the player can clear the screen before the clock runs down.
Farmer Tubby stands at the foot of the screen, and the ducks waddle further up the screen. Only one bullet at a time can be fired upwards, and Farmer Tubby has to avoid the maimed birds from hitting him on the head! Every so often, a swan flies over along the top of the screen and Farmer Tubby has to try and shoot it down for another bonus.
If the Farmer is hit on the head or collides with anything on the ground, then he is momentarily dazed, and loses a life. Worse still, the level then starts again from the beginning!
The first wave is simple enough to get through. However, the second wave introduces the eggs. The ducks above Farmer Tubby lay eggs, and when the eggs hit the ground they hatch into new ducks who then take off and bounce around the screen. The eggs can be shot as they are dropping, but they don't drop in a straight line, making them harder targets to hit.
The game gradually becomes more hectic, with eggs being laid much earlier and with increasing frequency. However, there are no further surprises as you progress through the levels. It's very much a case of 'more of the same', except for the colour where the score and bonus points are displayed change - starting on green, then going through yellow, blue, magenta, cyan and white.
Duck! features music from "La Belle Helene Waltz" on the title screen, and snatches from the tune "There was was an ugly duckling..." at the start of the game and whenever a life is lost.