So... Apparently you need to gather 8 super cryptic to get items to get the real ending, and it's done in a way I can't do with my real life time schedules (like waiting two hours for a cloud to come) and also one of them requires to know beforehand not to complete a certain puzzle or you are locked out of it in your save file.

It's okay that I'm not going after that ending though, as the game is about obssession and finally being able to be with a woman who was running away from the protagonist, you can gather the puzzle pieces that reminds of the moments you wish you had with her instead of growing beyond into something else. The last level is the beggining of the story, which means the main character always comes back to the moment she saw him as a sick human being.

And just like finding the little pieces that lets your mind go back into the past, if you wish to find the stars that actually let you alter what happened (despite the fact the woman can't be reached even when being able to get to her), Tim started to try out physics experiments to go back in time and change the attitude he had in the past, while the player needs to search up and down through all those levels piercing the physics and mechanics of the game world in the most obtuse and obscure of ways just to have a chance to alter the outcome, becoming a physicist of the game. But it's useless, that obssession the players that go for these secrets have is the opportunity you are giving Tim not to grow out of his madness.