The adventure game isn't dead. And it doesn't have to be cartoony and episodic to be relevant, either. It can, as is the case with Machinarium, simply be a beautiful game world, into which puzzles breathe life.
Best part? Being Christmas time, Machinarium is currently on sale for $10, which will nab you a copy of not just this wonderful game, but another of the developer's games, Samorost2, as well. It's probably the bargain of the year.