Based on the popular Godzilla franchise, "Godzilla - The Series - Monster Wars" for the Game Boy Color provided a side-scrolling beat 'em up experience. Players likely controlled Godzilla or other monsters, battling enemies across various levels.  The game's availability in multiple languages (English, French, and German) across Europe and the USA points to a successful, international release. The specific developer would require further research.

Godzilla - The Series - Monster Wars (Europe) (En,Fr,De)

Gifty (Germany)