Frog Master © 1982 APX [Atari Program Exchange].
A football game for 1 to 4 players. The setting is a football pond and the object is to train tadpoles to cross your opponent's goal line. Meanwhile your opponent is training tadploes to invade your goal line. The first side to score 50 points wins.
The game was originally developed in 1966 for the DEC PDP-1.