Nice buy!
I gave Dokuro a go this weekend and it's a charming puzzler, though to get the most out of it (in terms of raging less than myself) you probably need to get set in its rules and ways. The princess is extremely thick and set to continuously walk to the right in the absence of danger which can lead to a lot of trouble, but once you've got that sorted it's great fun trying to figure out its various conundrums.
It also introduces a new concept in each world, which keeps things fresh.