Not what I was expecting but it's not a bad game. The Prologue is short as it's the free introduction to the rest of the series. It's got a nice ominous theme but I was expecting a deeper type adventure game, this is more like a Big Fish hidden object game (HOG) with just the puzzles and without the hidden object scenes. It appears to be made by a two guy team and it's well done for that. I will play the rest of the series.
I do have a couple of suggestions though, it would be nice to have an option to have the cursor change over items and hotspots. It's easy to miss things with the dark color schemes. Also, fix the bug! Many people have an issue, very close to the beginning, with not being able to input the coordinates in the boat. The on screen keyboard does not display and typing on your real keyboard appears to do nothing. It's a game stopper if you don't know what to do. The solution, if you are having this issue, is that your keyboard IS typing it is just not displaying! So you type in the coordinates in the two boxes and even though they look blank hit plot course and it works! Not good to have a bug like this in the demo you are using to sell the rest.
Overall a good effort and I recommend you support them.

Very meh. Sliding block puzzle at the end was not fun, typical "we couldn't think of a good puzzle" puzzle. Towers of Hanoi level mediocrity.