Hi,
I can't make plain grass map with this tileset. When I cut it 48*48, there's no way to build big grass ground (e.g. 256*256), as inner parts doesn't connect well, you have only tiles for small islands. should I cut them in 24*24px ?

Hi.

It's because the textures are autotiles for RPGMaker.

It's 24px border,48px seamless texture, 24 px border

24px should work.