There are a few people wanting to play on the internet, but unfortunately it's difficult to find each other since there's rarely a server up. I'm aware of this problem, and I'm in the process of improving the system to make it easier to find a game. I'm working on dedicated server functionality at the moment; once that's up, demo players will be able to join the dedicated server and play on it, which should hopefully help to increase the multiplayer population.
Also, I just started this thread
to try and help people meet up.
If you're so inclined, you can help by spreading the word about the game.