Same as before with the original game: is there a reward if I find all of them? Does it make a difference?


To get to the "star world", like in the original Talos Principle, there is a fan behind dome C. This will blow you across the various small floating islands you see scattered around. Eventually, one of them takes you to a portal for the star world. Accessing it only requires 10 stars, despite there being more than that in the game.

It has seven very difficult puzzles, and collecting the sigil in each of them and then solving a tetromino puzzle below the main platform in the hub world that the other robots stand on will unlock three additional endings.

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    So does this mean that you can just get 10 stars and ignore the rest and still get all the endings? – Chris Jun 12 '16 at 16:05
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    @Chris Yes, that's what I did – Pyritie Jun 13 '16 at 9:26
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    The domes in Gehenna are numbered, not lettered. Did you mean dome 3? – Paul Aug 2 '18 at 18:05

In term of steam achievements you only need the 10 stars to unlock the hidden part with 7 more puzzles which is necessary for the Free Admin achievement.

However there is no achievement related to getting all the stars.

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