Kid Dracula Classic
The Matrix has 18 adventure games on file for the Game Boy, released between 1990–2001. 4 of them support multiplayer. They're ranked below by legacy score, so the games that shaped the genre on the Game Boy come first, with lesser-known picks further down.
Adventure games focus on exploration, story and puzzle-solving rather than combat. Progress comes from examining your surroundings, collecting items and figuring out how they fit together.
Typical commitment: weekend project (roughly 6–20 hours). Tip: Classic adventure games can be cryptic by modern standards. Take notes, try everything on everything, and save before risky choices.