Round-Up is a single-player and multiplayer game where players control a sheepdog to herd sheep into a corral while avoiding enemies like snakes and hawks. The core mechanics involve navigating the environment using arrow keys and barking with the space bar, with support for Xbox gamepads in the downloadable version. In this game, players take on the role of Mr. Brown's loyal sheepdog, tasked with protecting and herding sheep in a rural setting. The narrative is inspired by a game concept from the early 1980s, with a backstory that pays tribute to a young game designer named Mi Kyung Kim, whose creative idea was never realized due to her tragic death. It stands out with its unique theme of farmyard herding combined with strategic avoidance of predators, and it incorporates advanced gameplay elements such as waking the rancher to assist with threats. The game also features a nostalgic homage to early video game history and a heartfelt dedication to a promising game designer lost too soon.