[tomg]

> I almost want to learn JS and Node to build a real one. Just to spite the OP.

I've been doing just that for the last couple weekends. You can see the work in progress at: http://okayarcade.com/everybody-shoot-everybody/

Note: The link will eventually die (since it's a really early iteration I quickly published when I saw this HN thread; you can't even shoot anyone else) when I take it back down. Uses ImpactJS, NodeJS, and Socket.IO.

edit: Controls: arrow keys = move;

edit 2: I'll probably be open sourcing the game (at least the non ImpactJS parts) once it's more production ready.