Originally the idea was the "original" and "clones" saw the world differently; the player had lots of directional arrows telling them where to go whereas the clones saw propaganda about how they were being used, shouldn't cooperate and should kill the original - since that's what doppelgangers usually do; with some kind of pay-off at the end.
However, I'm not really working with any art assets so I started thinking very functionally, and now it's six Portal-style test chamber rooms and doesn't really need or want any of that stuff. I fear I will never make an arts.