Thanks for the feedback KeltonFornit. That is how the game was intended to be but in hindsight I think you're right about the "Main-Menu" button. It's a little misleading considering the intro scene IS the main-menu. It's where you select your level and toggle the subtitles and such. Still, it's definitely misleading and I'll try to think of a better way to convey that.
Additionally, there are no save points on purpose. Each chapter is less than 15 minutes so I thought it was small enough that you could easy drop back in if you couldn't finish the story in one sitting. The quit button does ask for confirmation but it might be worth it to add that to the "Main-Menu" button too. Regardless, thanks for taking the time to provide feedback.

Thanks for your reply. To be honest, when I submitted that I had forgotten about the level select within the game. I think it probably didn't register with me as its an unusual approach and I was so surprised by what happened I thought it must have been a bug, not by design.

Thinking about it now, the way you have implemented the menu is actually quite cool, and I think it would work better if you made it more standard to how games usually do it. The first time you play the game it seems odd that you can select any level, so you should only be able to select the first level when its your first time playing. After that, only levels you have completed should be available.

In terms of save, I know the levels are not very long but if you need to exit the game just before the end of a level, you don't KNOW its near the end of the level, and a more standard "Continue" button might be better. That would work with the current menu/in game level selector as you would only use that when you want to start a level from the beginning.