Thank you so much for playing the game, and thank you for the feedback. I tried to keep the game as realistic as I could, and I have to say I'm really sorry about how dark the game is on your video. It definitely wasn't designed that way. It's strange that on my computer and laptop, through testing that it doesn't look anywhere near as dark as that, so I will take a look at this issue and there will be an update probably later today or tomorrow. Thanks again and have a great day :)
Edit: Brightness slider now added to the pause menu & improved lighting in the darker scenes of the game.