This is a later version of Bubble Bobble II for arcades. Version 2.5O, released by Taito, shows the refinements made to the game after its initial release. While the core gameplay remains consistent with other versions of Bubble Bobble II, this version may include bug fixes, balancing adjustments or slight improvements to the graphics or sound.   The version number indicates a later iteration, potentially reflecting updates or revisions.

Bubble Bobble II (Ver 2.5O 1994/10/05)

Bubble Bobble (US with mode select)