Hey Ben, this one is a multiplayer arena so it's best played with a couple other people (there's a single server so everyone who opens the game will be in the same match). Thanks for giving it a try!
Oh really?!? That's impressive! I would add a comment about that on the page (or maybe I missed it) but be sure not to make updates to the game code or you'll be disqualified. (In case you weren't on Lana's live stream when she said that.) :)
I started experimenting with multiplayer games and a server a couple months ago, the cost per month depends on how much it's used. But overall not very much, last month it cost me $2.