if i right click with the hammer, nothing will pop up. i can't do anything now xD

I highly recommend to check out the wiki, many things have changed since you could right click the hammer. https://github.com/CreativeMD/LittleTiles/wiki

@CreativeMD i watched the video, something with ''z'' but that doesn't work to. idk how the hammer thing works then, i can't get that pop up that i can change the block size thingy (sorry for my bad english)

It's 'c' and I highly recommend to watch this tutorial series: https://www.youtube.com/watch?v=Bfg88rRNocA&list=PLQzDSnrhrcyyJ4DiirrFtGhyfd8ws-fpf

@CreativeMD oh okay sorry xD, but thank you so much!