Rodland is a 1990 puzzle game developed by Konami and published by Ultra Games in Europe and Konami in Japan for the Nintendo Game Boy. The gameplay involves guiding a cute, round protagonist through various maze-like levels, collecting items, and avoiding enemies.  The game features charming graphics and simple-yet-challenging puzzles that are both fun and engaging.  Though a puzzle game, the charm of its character and visual style made it quite popular at its time. 

Rodland (Europe)

Rockman World 3 (Japan)