Warning: Scientific accuracy is not guaranteed. Please do not use this visualization for interstellar navigation.
They could at least try to put the Alpha Cassiopeiae and and Beta Cassiopeiae in the same "general" direction from the Sun. It would fool more people.
Distances seem to be correct but the coordinates aren't true at all.
Regardless, it looks beautiful. But it would be more beautiful if you could actually see their true locations. Without it, it is a just a game ui demo.
Edit: and my apologies if I have wasted your afternoon.