Bonus material and downloadable contents

Bonus Material

Bonus Material would come in the form of purchasable content e.g. soundtracks, items, new characters or a development process book.

Downloadable Content

DLCs would include new maps with new soundtracks and new puzzle mechanics.
These new Maps have a different setting (stranded on a different planet, trying to find an artefact) which will give the players new and exciting things to explore.