Highly recommended if you want to play a point-and-click adventure game with unconventional mechanics and a spooky atmosphere. Here's my own playthrough for anyone interested:
I played the original version as well, so I can safely say that the full version essentially has more content that extends the length of the game. The difficulty was also ramped up, which gave me a hard time! Though, I noticed that there was hint system added in a later update which might make it easier for others.
There's also more to the game than what I did in my first playthrough. I won't spoil it here, but you can find it in my other video on my Youtube channel if you're really curious. However, it's all I was able to find, so I have no idea if there's still anything else to discover!