When a talented roboticist goes missing, archaeologist Aliya Elasra and her mechanical assistant Six are sent out onto the rivers of the Nebula to find him. Their search soon has them piecing together an ancient trail of artifacts, inscriptions, and lost knowledge that leads thousands of years into the past...

From the creators of the award-winning '80 Days' comes an engrossing narrative adventure. Sail the massive open world of the Nebula, on the trail of distant moons. Decipher an entire hieroglyphic language in a gamewide interlocking puzzle where every solution - right or wrong - becomes part of your story. Meet, charm, outwit, and befriend a diverse range of characters who remember everything you say and do. Will you make friends, or enemies? Unearth the Nebula's buried history in a fluid, ever-changing story that adapts in real-time around your actions and your choices.

Will you uncover the path to Heaven's Vault?