The company that created these is called Pixels XL. Check them out they’re from Valencia, Spain. They have a simple system of tiles that you can place on the wall for you to come up with crazy designs or portraits. The great thing is that they’re removable and changeable. All you need is a wall that has primer or has some magnetic material built into it.
Noah would totally dig these!
I love Pixel art and these are too fun!
Or for the serious gamers
Check out PixelsXL HERE