1/3 of 4 studs wide possible? In this build from the World Builder game, it appears the blue and green stripes running up the length of the tower take up 1/3 of 4 studs. Is this or a close enough approximation possible to achieve, or is this just artistic liberty from the game designers? I know a plate is 1/3 of a brick height-wise (3.2 / 9.6 mm) but apparently is 2/5 width-wise (3.2 / 8 mm). So stacking plates horizontally it in theory could be approximated by 3 plates, 4 plates, 3 plates.
I think you are looking in perspective at a digital render of a tower base that has 1x2 blue bricks on each side (1 wide) with a 2x2 lime brick in the center. It only appears to be 1/3-1/3-1/3, but is in fact 1/4-1/2-1/4. You can see this best if you zoom in on the base plate and look at how the studs line up with the lowest tier of the base.