Nice, short, atmospheric game. At first, you don't know what you are there to do, but this got me to explore around, do some mapping, look at things--but you find out soon enough what your goal is--[spoiler]I was immediately able to place 3 or 4 of the rocks, based on what I had learned about the island prior to going into the museum[/spoiler]. Just looking around was a big part of the puzzles. The subordinate goal gave me a laugh--I'm still looking for them.