This is Wario Land II, a puzzle-platformer for the Game Boy starring the greedy anti-hero. It ditches the pure running and jumping of a Mario game for a more deliberate, exploration-focused adventure. The goal is to hunt for keys to unlock doors and progress, making it a clever and worthwhile twist on the formula.
The gameplay is more about puzzle-solving than fast reflexes. A unique surprise is that Wario can't die from enemies, he just gets knocked back or transformed, which removes frustration and encourages experimentation. It's a chill, inventive game that rewards curiosity, so give it a shot.