[ffsm8]

You mean the select: none, along with the drag setting?

If so, that's not necessarily followed/applied for accessibility reasons

[animuchan]

If your game is essentially a single canvas element, having it user-selectable clearly doesn't help accessibility in any way.

[ffsm8]

You say that as if I've got any control over the browser on the end users device, some of which will be configured to not apply these rules globally for accessibility reasons...