Oira Jajamaru! Sekai Daibouken is a Game Boy action game released in Japan. The title suggests the game features the character Jajamaru on a world adventure. This likely translates to a platforming or adventure style game.  The game would have simple 8-bit graphics and gameplay typical for its era.  Given the title, it likely draws upon elements of popular Japanese media and gaming tropes.

Oira Jajamaru! Sekai Daibouken (Japan)

Nontan to Issho - Kurukuru Puzzle (Japan)