it's good, but you should work on optimization. There are too many details: are there glasses in the kitchen drawers, wth? I had light problems too, if I pick up a paper it's all dark until I tilt it, but perhaps it's gamma.
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We agree. We've actually been creating a new version of this demo that overhauls the lighting system and fixes various bugs that have been consisten with each build. We're sorry for the experience you had and have been hard at work crafting a demo that solves not only the issues you've pointed out but issues other players have had.