Once i finish La Mulana, i will get to Monster World IV for sure.
The more play La Mulana gets, the more my love for it grows. Some might find the puzzles indecipherable, but (so far) all the information you need is available with some exploration and a bit of trial and error. Definitely niche appeal so I'm not expecting to see it on many other "best of 2012" short lists, but a game that any old-school gamer should make an effort to play.