Frogger is one of the few official arcade adaptations that the Coco had. Made by The Cornsoft Group, who usually did TRS-80 Model I/III/IV games (including their official Frogger as well), it featured multi-part music, and most of the nuances from the original arcade game (crocodiles and snakes in later screens, for example). While the game was in a lower resolution than most (128x96x4), it actually duplicated the arcade feel fairly well.
Title: Frogger
Author: Jim Nunke
Publisher: The Cornsoft Group
Released: May 1983 (part of Colorware ad in Color Computer Magazine)
Requires: Color Computer 1,2,3, 16K RAM, tape or disk, joystick optional.