Get Google Maps 8bit tile layer into your own project

8bit.js

var eightbitOptions = {
  getTileUrl: function(coord, zoom) {
    return "http://mt1.google.com/vt/lyrs=8bit,m@174000000&hl=en&src=app&s=Galil&" +
    "z=" + zoom + "&x=" + coord.x + "&y=" + coord.y;
  },
  tileSize: new google.maps.Size(256, 256),
  isPng: true
};
  
var eightbitMapType = new google.maps.ImageMapType(eightbitOptions);
map.overlayMapTypes.insertAt(0, eightbitMapType);