This was a good game to play, not sure on the tile lines though, don't know whether they were intended. You can simply fix it by setting 0.01 less than the size of the tiles e.g. 16px x 16px, set it to 15.99px in the unity editor.
Thanks! I’ll definitely keep it in mind. I did notice it after building the game, and I tried a similar fix, but it didnt seem to do anything, but i’ll try that next time.