Who Is Oscar Lake? is a single-player adventure and graphic adventure / point-and-click game in which players explore environments and solve puzzles through simple point-and-click mechanics. In this game, players follow the story of Oscar Lake, a character whose mysterious disappearance sets the stage for an engaging narrative set in a realistic setting. It stands out with its innovative combination of adventure gameplay and language learning, utilizing recorded speech and interactive dialogues to enhance educational value, along with a mix of pre-rendered backgrounds and live action video typical of the 1990s.