Detectives United 7: Adventure is a hidden object game designed for iPhone users, where players join DU agents on a thrilling mission in Myst Hill. The game involves solving puzzles, finding lost items, and uncovering mysteries while exploring unique locations. As players navigate through the storyline, they will encounter various challenges including ferocious predators and mysterious characters in beast masks.

The gameplay features a variety of exciting elements such as replayable hidden object puzzles, mini-games, and a bonus chapter that delves deeper into the backstory of one of the agents. Players can zoom in on scenes to locate objects and utilize clues to overcome obstacles. The game is available as a free trial, with an option for in-app purchases to unlock the full version, providing an engaging experience for fans of the genre.