The theme is too vague and confusing, do things like glitches, mutation count as aberration? Feel free to suggest any words associated with the theme, it will help me a lot in generating ideas.
Glitches often cause chromatic abberation, so yeah they count- seems discouraged though. In general abberation is just anything unpleasant, unwelcome, and unexpected. An idea I had before settling on my "horrible horrible wraith" idea was one of dealing with an unexpected visitor who just kept throwing suprises at the player.
There's definitely a connotation of horror or unease, but technically (and he even mentioned this in the livestream), abberations are just unexpected, not necessarily unpleasant. My guess is he just really wants to push us to make something outside the box, play with established assumptions, etc.
