I didn't even attempt multiplayer but its cool that you got it working. I was confused by the controls, felt the player was too fast, and confused on what I was actually trying to do.

Wish there was more content to the game, it was straightforward and easy enough to understand but I got bored quickly. There was a little lag but I was able to play easy enough, I think it has a solid enough foundation for more in the future!

I know making a multiplayer game is a difficult task for even seasoned developers, so attempting it for a jam is pretty awesome, but what's here just isn't enough to wet my whistle. I'm also disappointed it isn't on the theme.  well done for setting it up, I collected the 5 coins, bashed a couple of rocks, and I'd say I've seen everything.