The Upper Downer Complex

The Upper Downer Complex is a quiet horror experience set in an endless, shifting structure. Descend through procedurally generated layers — from empty malls to forgotten hospitals — connected only by elevators that never truly rest. Find how deep you can go before the world forgets you!

Last Updated: 10/18/2025

Platforms
  • Windows
  • Mac
  • Linux

About The Upper Downer Complex

The Upper Downer Complex is an Action, Adventure, Indie, and Early Access game developed by Darkslateblue Studio, and Darkslateblue Studios. It was released on the Steam Store by Darkslateblue Studios, and Darkslateblue Studio.

It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.

According to Steam’s category system, The Upper Downer Complex supports the following features:

  • Playable without Timed Input
  • Partial Controller Support
  • Save Anytime
  • Stereo Sound
  • Co-op
  • Color Alternatives
  • Multi-player
  • Full controller support
  • Single-player
  • Family Sharing
  • Online Co-op

Media & Sceenshots

Watch the featured video for The Upper Downer Complex and see the latest screenshots from the Steam Store.

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Frequently Asked Questions

Soures & References

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