5 stars for now. The game definitely has a future, but could do with quite a lot more content. Given the simple dialogue and scenes, and the linear story, you might expect a lot of content, but you'd be incorrect.
If the game at this point had ~5 times as much content I could easily look past the simplicity of the dialogue and lack of options/choices/paths.
This all having been said, my 5 star rating is looking towards the future of the game, which if it is developed and more content is added, the game will be very good at what it is.