Became boring after I got to about $1.5 mil. Very, very bad attack interface. Sudden "Humans recaptured city!" throws you back to world map, which is VERY annoying. 3/5
Sooo, Santa shoots snowballs at shadow demons. And snowball are frozen, flaming(?) and poisoned(?!) at the same time. And there are brute elves. Yep, that's Nerdook!
Absolutely beautiful, 5/5.
One small thing, though.
Collision control. Yes, i'm talking about those rings. Probably they blend with planet too much. I just don't feel I'm going to crash.
Will wait for sequel.
BTW, what about asteroid fields? (For extra difficulty.)
Check the credits button in the game.