This is pretty cute. It'd be interesting to have slightly more "collaborative" mechanics in the next version.

Maybe rather than directly attacking the boss, damage boosts can get stacked up for other players to use? Or maybe "shields", which reduce the cooldown / timeout.

Is there a way to get notified about future versions/updates?

Cool concept! It's a neat example of shared-world mechanics in a tiny package. Thanks for sharing.

... boy my arm is tired!