Keep the Balance is a Game Boy Color game released in Europe, offering multilingual support (English, French, German, Spanish, Italian). The title suggests the gameplay involves maintaining balance, possibly in a puzzle or dexterity-based game.  It might be a single-player game with increasing difficulty levels.  Further details on game specifics, including developer and publisher, are currently unavailable from common sources.

Keep the Balance (Europe) (En,Fr,De,Es,It)

Kawa no Nushi Tsuri 4 (Japan)