Simple and solid. Has potential.
But i had an issue with the browser version.
While rightclick does work, rightclicking while holding shift to focus triggers the browser's context menu (using firefox) which not just blocks a part of the screen until clicked away but also locks your movement since the keypresses are handled by the context menu and thus arent forwarded to the game's control. Obviously easy to get rid of by just clicking into the game again to close the contextmenu but in a heated moment the short blocking of movement can cost you a life.