how to join 2 tilesets together?

how to do that without photoshop?
at the same map?

You could just use MS paint or preaty much ANY program that lets you cut, copy, past and save.

I hear there are also several pre-made chipsets like that, thers a gold mine of resources out there! you just need to know wehat to look.

open up both tilesets you want to combine. add up the lenght and width, open a new file with that mesurments, drab both to the new empty spot and line one ontop the other

open up both tilesets you want to combine. add up the lenght and width, open a new file with that mesurments, drab both to the new empty spot and line one ontop the other

*dittos* i've done this many a times lol