Description: Descend into the depths of an alien underwater world filled with resources, creatures, wonder and threats. Craft equipment and submarines to explore lush coral reefs, volcanoes, cave systems, and more - All while attempting to survive.


  • PC
  • Xbox One
  • PlayStation 4
  • Nintendo Switch
  • iOS (iPhone/iPad)
  • PlayStation 5
Initial Release Date: Jan 23, 2018
  • Unknown Worlds Entertainment
Publisher: Unknown Worlds Entertainment


Tom Jubert
Written By
James Backway
Cast: Bart Torgal,Berkeley
Simon Chylinski
Cast: Player
Jon Etheridge
Cast: Alterra HQ
Christopher Godwin
Cast: Paul Torgal,Capitan Hollister,Lifepod 7 Crew
Lorelei King
Cast: Marguerit Maida,Lifepod 6 Crew
Eleanor Matsuura
Cast: Officer Yu,Lifepod 3 Crew,Lifepod 6 Passenger
Lani Minella
Cast: Sea Emperor
Tony Porter
Cast: Avery Quinn
Ramon Tikaram
Cast: Second Officer Keen,Danby,Ozzy,Lifepod 3 Crew
Brent Triplett
Cast: Alterra HQ
Mark Fischbach
Cast: Markiplier Bobblehead
Seán McLoughlin
Cast: Jacksepticeye in Jar
Adam Creighton
Produced By: producer
Simon Chylinski
Sound: sound designer
Christopher Gardner
Sound: sound recordist
Cory Strader
Art Direction
Sylvain Hel
Visual Effects: visual effects artist
Brian Cummings
Art Department: technical art lead
Amanda Diaz
Art Department: additional art
Andrew Jones
Art Department: 3d art
Pat Presley
Art Department: concept artist
Alex Jeremy
Animation: animator
Louis Karim
Animation: animator
Colin Knueppel
Animation: lead animator
Scott MacDonald
Animation: animator
Scott MacDonald
Animation: lead animator: QA
Brandt Wojack
Animation: animator
special thanks
Nick Diction
special thanks
Mark Fischbach
special thanks
Seán McLoughlin
special thanks
special thanks
Max Schaefer
special thanks
Bill Wang
special thanks