Utterly Mad

yeah, its sub. you can play for free, but only for 12 hours a month. if you pay them 15$, you can play for 24 hours a month AND get access to the old game for as long as they keep it around.
or you can buy subscription packages, the cheapest being 10$ for 30 days and the most expensive being 300$ for 365 days.

Also they are selling hats.

[edit]
There's been a change, you can now play for 7 hours a week. It's better, but it's still not good.