Hey,
thank you for the comment 
Can you maybe elaborate a bit more? :
- what’s the meaning of 16 bit?
- what software do you recommend?
- how(layers, masks,…) and what format should the map be saved in?
Thanks .)
Edit:
I read some documentation and if I understand it correctly, <x>bit means a number of bits/pixel to store height value…?
E.g. 8bit allows storing only 256 values.
Isn’t 8bit enough for MOBA map?
Or would that produce huge(unpassable) “cliffs” between individual parts of the map(river, lane, base,…)?
So you recommend using 16bit OR MORE, right? That could be GIMP, right?