Osawagase! Penguin Boy, a Japan-exclusive Game Boy game, features a penguin as its protagonist. The developer and specific release date remain obscure in widely available English resources.  Gameplay is likely an action, puzzle, or platformer, given the main character. The title's exclamation point suggests a lively, fun tone and potentially simple, accessible gameplay.  Understanding specific details regarding its release and reception requires access to Japanese-language gaming resources.

Osawagase! Penguin Boy (Japan)

Oni V - Innin o Tsugumono (Japan)