Saros Biomes: Full list of locations and and collectibles

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In Saros, Biomes function much like levels in other games, representing the different areas you’ll explore as you travel across the planet Carcosa.

Returnal, the previous game from Housemarque, featured six distinct areas, each filled with challenging enemies determined to stop you from progressing.

Curious about the different environments, or Biomes, in Saros? Here’s a breakdown of what you can find.

All Saros Biomes: Full list of locations and collectibles

There are nine total Biomes in Saros, including your hub world, The Passage.

Each area in the game, aside from The Passage, has a boss to defeat, as well as a fixed amount of Halcyon to gather and both Audio and Text Logs to find.

Here is a list of all the Biomes in Saros:

  1. The Passage
  2. Shattered Rise
  3. Ancient Depths
  4. Shattered Descent
  5. Blighted Marsh
  6. Desecrated Fortress
  7. Acolyte’s Haven
  8. Cathedral
  9. Yellow Shore

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The Passage

The area in Saros’s central world might not need to be on this list, but we’ve included it just in case.

As the hub world, it’s the only Biome that doesn’t have a boss or any collectibles.

You’ll be able to interact with characters from Echelon IV and visit the Banyan Tree. At the Banyan Tree, you can improve your abilities, see how different factors are affecting you, and quickly travel between areas.

Shattered Rise

  • Boss – Prophet
  • Halcyon – 8
  • Audio Logs –17
  • Text Logs – 3

Ancient Depths

  • Boss – Bastion
  • Halcyon – 12
  • Audio Logs – 14
  • Text Logs – 3

Shattered Descent

  • Boss – Rhabdom
  • Halcyon –12
  • Audio Logs – 14
  • Text Logs – 6

Blighted Marsh

  • Boss – Legion
  • Halcyon – 20
  • Audio Logs – 10
  • Text Logs – 1

Desecrated Fortress

  • Boss – Architect
  • Halcyon – 25
  • Audio Logs – 11
  • Text Logs – 1

Acolyte’s Haven

  • Boss – Shepherd
  • Halcyon –35
  • Audio Logs – 9
  • Text Logs – 1

Cathedral

  • Boss – Priestess
  • Halcyon –50
  • Audio Logs – 13
  • Text Logs – 5

Yellow Shore

  • Boss – King
  • Halcyon –N/A
  • Audio Logs – 14
  • Text Logs – 1

Because Saros involves playing through areas repeatedly, it will likely take time and several attempts to find everything in each Biome.

Authors

Alex RaisbeckGaming writer

Alex Raisbeck writes about video games for TopMob, covering both big-name titles and smaller independent games. He’s also contributed to well-known gaming publications like VideoGamer, GamesRadar+, PC Gamer, and PCGamesN.

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2026-05-01 15:05