Collie Defense is a single-player strategy and simulation game in which players manage and defend a flock of sheep using strategic placement and timing of defensive actions. In this game, players take on the role of a vigilant Border Collie tasked with protecting its flock from various predators such as bears, tigers, and foxes across different levels and environments. It stands out with its charming graphics tailored for the Game Boy Advance and Evercade platforms, combining classic tower defense mechanics with a cute, animal-themed aesthetic, and offering engaging gameplay that challenges players' strategic thinking and timing skills.