On the browser version I can still see the mouse on screen. And i'm prevented from turning 360 degrees because of it.
Also nice game, I feel like it would be good if you gave the player more direction as I was a bit lost as to what to do in the beginning. And I feel like having to switch wands to pick up reloads didn't really add anything to the gameplay (I just found myself doing a full rotation of my scrolling wheel just to pick up the reloads)