This game's hard to get working. I had to refresh the page and then keep fiddling to get it to respond. Once I got a level started it worked fine though.
I feel like the controls would be really awkward if I were using an actual phone. Other than that, this is a pretty good simulation of what it would feel like to be the slasher from the Halloween franchise. The victims being able to get closer to the walls than the killer seems weird though.