(the HF-Pack for example use realistic sprites about 32圆4 pixel) Default would be 32x32 pixel, but there are several larger sprites (monsters) even in default, and the sprites for some add-on-packs are larger. Sprites can be any size, and the spritesheet-size depends on the size choosen for the single sprite.
There is no spritesize, and there is not simple tileset-size.
