Linux can actually become an alternative OS, when im an adult and I buy a new PC, if its for gaming but just a home or server PC ill just put Linux on it to save $100.
Blockland really does work perfect with Wine, although I tried it yesterday with Ubuntu 12.04 and a version of wine (it might've been old) but Blockland did not start up, I think it it was because I didn't have my sound drives an it didn't come up, doesn't make much sense but I think that's why.
Someone has also found a way to make dedicated servers work, t requires some work with the terminal but its easy.