Good job on the game. A very chilling exploration game with good visuals, where you are visiting (or revisiting) an island with a house and windmill. It creates a lonely atmosphere, and the graphics and environmental models help sell that feeling well. Notes scattered around the island give small hints about what may have happened there.
Spoilers (if you’d like me to remove this part, I can edit the comment):
For the symbolisms and metaphores, it can be interpreted as:
The island = the memory of someone who diedThe windmill = the mind keeping that memory aliveThe player’s choice = whether to move on, erase the memory, or continue living while carrying it.