Spoiler>we will try to sum up what we saw. It was the ship, but somehow wrong. Certain objects were disturbingly different, like the painting in Cea's room showed the ball hatching, but mostly things were just ravaged and torn. Everything was dark. It's like that Universe was dead already and we were meandering through it's corpse. A dreamwalker inhabiting the statue in Cea's room started stalking Slate, berating him for his behaviour. Sunny attacked and destroyed the statue, but eventually it's remaining head sprang back and i think it now posessed Slate. The way Sonny explained it, the developers of the game somehow banished the dreamwalkers to this limbo, and now they inhabit it as formless creatures. Shapeless subroutines and script conglomerates looking for a purpose.
>By-the-way, we think "Sonny" might actually be the exiled mind of The Unknown. He eluded to himself as being part of something greater that was destroyed by a greater being.