The game i believe you are referring to is Gold/Silver. You could go in two regions and get 16 badges, also you can fight Ash in the end.
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in total 16 badges
there is 16 badges... 8 in kanto and 8 in johto
16 badges. 8 from Jhoto and 8 from Kanto.
in every game except gold and silver and crystal there are 8 badges, gold silver and crystal have 16 cause you can fight the kanto and johto leaders.
There is only 8.