The Complex: Expedition

Horror· Exploration· Realistic· Psychological Horror

Released Jul 2025

When a routine expedition into The Complex goes horribly wrong, you're left alone and lost, wandering the seemingly infinite maze of hallways, otherwise known as the Backrooms. Might there be something following you?

89% positive · 2,689 reviews

Done

All announced content has been released

Medium confidence

Done

All announced content has been released

Medium confidence

Where to buy

Steam Updated 9 Oct 2026 $14.99

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Evaluation

The Complex: Expedition launched its full 1.0 release on July 18, 2025, following a complete ground-up remake of the game from its earlier version. The developer's February 16, 2025 post explained that the extended development time was due to remaking the entire game from scratch to deliver a more polished experience. Since the 1.0 launch, the developer has shipped one post-launch update on April 20, 2026, which added quality-of-life features including volume options, controller UI refinements, achievements, and UI touch-ups. That same post mentioned that the next update would bring full controller support and key rebindings — but this is a quality-of-life/technical improvement, not a content expansion or major new gameplay content. There is no announced DLC, no season pass, no roadmap for new story content, and no unreleased DLC on the store listing. The game is a self-contained psychological horror experience with multiple endings and no indication from the developer of planned story expansions or additional content beyond the polish updates. A single feature patch since launch does not establish a sustained content update cadence, and the developer has not signaled that more substantial content is coming. The game appears to have launched as a complete package on July 18, 2025.

Evidence

Full 1.0 release launched on July 18, 2025, described as a brand new experience rebuilt from the ground up

news post · Jul 18, 2025 source content shipped

high

Developer confirmed the game was completely remade for the full release, citing dissatisfaction with the early access version; described the full release as in its later stage of development

news post · Feb 16, 2025 source content planned

high

Media

Details

Developer

pgWave

Publisher

pgWave

Achievements

Platform

Windows

Controller

—

Steam Deck

Unsupported

Players

Single-player

Horror Exploration Realistic Psychological Horror Story Rich Action Mystery Adventure Cinematic Simulation Immersive Sim First-Person 3D 1990's Atmospheric

About this game

STORY

In The Complex: Expedition, you are sent into The Complex along with your team to explore the unexplored regions. When that mission goes horribly wrong, you are left alone, dazed and lost, wandering the seemingly infinite maze of hallways of The Complex.

THE EXPERIENCE

This is a psychological horror experience based on the "Backrooms" urban legend. View the world through a VHS camera and follow along a storyline involving an expedition into The Complex.

With different endings and shifting entry points into The Complex, every playthrough can seem different. This is a slow-burning, atmospheric horror experience focused on exploration and tension.

Experience one of the most immersive Backrooms experiences to date.

Explore the mysterious and unforgiving world of The Complex.

Investigate an unknown lifeform residing in this world.

NOTE: This game is not connected with Kane Pixels' Backrooms nor the Backrooms Wiki/Fandom, though some parts of the experience may be inspired by them.