У вашего броузера проблема в совместимости с HTML5
GameMaker Studio 2 tutorial using tiles and tilesets to create seamless room graphics. We also cover room layers and layer depths using sprites and tiles.
The tile set used in this video can be downloaded from the link below and was created by:
Zabin, Daneeklu, Jetrel, Hyptosis, Redshrike, Bertram.
http://opengameart.org/content/rpg-tiles-cobble-stone-paths-town-objects to see who did what