The original Game Boy (1989–2003) saw over 1,100 licensed games released worldwide—excluding Game Boy Color (1998) and Game Boy Advance (2001) titles, which are separate libraries.
Many titles launched in multiple regions with different packaging/languages. The 1,100+ figure counts distinct game codes (DMG-XXX).
For collectors, the DMG-XXX model number on the cartridge label is the gold standard for identifying unique original Game Boy releases.