Hi, One of my first posts on here, but I think meppi was asking about this magazine in another post. I don't have much information but can verify the following :-
Magazine name = GB Action
Issue 1 1992-06 Published by Europress
The last issue that I have is
Issue 23 1994-03 also published by Europress
Out of these 23 issues I do have 19 of them and I'm pretty sure that the magazine did continue past issue 23, I recall seeing issue 26 on an e-bay auction at some point.
Being aimed primarily at the Gameboy the magazine doesn't have an enourmous amount of pages.
Most of this is from memory as most of my magazines are boxed up on a pallet at work waiting to be sorted.
Regards
C0llector