THE MULLER-POWELL PRINCIPLE: Director's Cut

THE MULLER-POWELL PRINCIPLE: Director's Cut

Released Nov 2023

Dr. Herman, your sci-fi journey begins. Armed only with your mind and the Manipulator that operates with different types of energy, you'll have to pass through portals, visit parallel worlds, and solve physics-based puzzles.

71% positive · 371 reviews
Not yet
Released, but still in active development
High confidence
Active Development
Not yet
Released, but still in active development
High confidence
Active Development

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Steam $14.99
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Evaluation

The Muller-Powell Principle launched on November 29, 2023 and received patches through early 2024. Development then paused for roughly two years due to a legal dispute with the publisher. On July 20, 2026, the studio announced the dispute was resolved and that a Director's Cut — described as the biggest update in the game's history — was in development. The Director's Cut shipped on September 21, 2026 [NEWS-1]. It includes an engine upgrade from Unreal Engine 4.27 to UE 5.8.2, a rebuilt save system, a full gameplay overhaul (boss fights, chase sequences, puzzle design, and the Reactor chapter), narrative and dialogue revisions, and localization into six new languages. Crucially, the September 21 post explicitly states that "during these days we will be continuing supporting the game and polishing the experience even further," and lists concrete near-term plans: additional stability and quality-of-life improvements, more language localizations (Japanese, Italian, French, and Traditional Chinese already in progress), and DLSS and other upscaler support. This is an active post-Director's Cut commitment to further updates, made on September 21, 2026 — six days before today's date of September 27, 2026. The developer has not indicated that development is complete.
Evidence
Director's Cut launched on September 21, 2026. Post explicitly states the developer will continue supporting the game, with plans for more stability updates, additional language localizations (Japanese, Italian, French, Traditional Chinese in progress), and DLSS/upscaler support.
news post · Sep 21, 2026 source development ongoing
high
Developer announced resolution of a two-year legal dispute with their publisher, reclaiming full rights to the game, and announced the Director's Cut as the biggest update in the game's history.
news post · Jul 20, 2026 source development ongoing
high

Media

Details

Publisher
Three Dots Games
Achievements
45
Platform
Windows
Controller
full support
Steam Deck
Verified
Players
Single-player

About this game

THE MULLER-POWELL PRINCIPLE is a sci-fi thriller taking place in the near future. You are Harry Herman, a scientist at Delta Laboratories, a research company that specializes in interdimensional travel. You had been participating in a project that was supposed to benefit all humanity, but something went terribly wrong. To uncover the secrets of Delta Labs and set things right, you'll have to make your way through odd and surrealistic worlds.

Solve various puzzles and trick enemies with your special tool - the Portable Energy Manipulator, a weapon designed to operate with various types of energy․

PHYSICS PUZZLES & INTERACTIVE ENVIRONMENT

In this game, the solutions to the puzzles aren't obvious. Sometimes all it takes is finding a generator and plugging it in to power up a room. However, in many cases, a more complex approach is needed. You'll be interacting with many objects, such as computer terminals to find clues, obstacles to remove, and boxes to carry. Even a simple mug may come in handy. Explore the environment to find the best of many possible solutions. Here, you won't find a cube dispenser or a highlighted exit door at the end. It's all on you to figure out.

PORTABLE ENERGY MANIPULATOR

The device you carry throughout the game can absorb different energy types from the environment and use them to perform various tasks.

Absorbing energy from a particular source will give the gun its properties. Use heat from fire and radiators to melt glass, disable security cameras with a beam of light, and take hazardous radiation from toxic puddles scattered across Delta facilities. Eventually, you'll encounter quantum entanglement energy sources - the mysterious power capable of opening rifts between worlds.

Strange and dangerous creatures inhabit parallel universes. Most of the time, you can't defeat your enemies. But the Manipulator may help you to outsmart and bypass them. Some enemies can be frozen in place using the force field energy, while others are sensitive to light, so you'll have to blind them. The further you advance, the more thinking it will take to find your way out of another trap.

You find yourself alone in one of Delta Labs' off-world research facilities in an unknown dimension. Everything around here looks as if it's about to fall apart. As you find a radio transmitter, some people will contact you. It looks like they’re old acquaintances: Eugene and Alex, and it seems they want to help you find your way back. Here’s the thing: one of them is very friendly, while the other clearly thinks you’ve made a huge mistake and blames you for it. But whose advice is better to follow on your journey through parallel universes and surreal worlds?

Experience a story where your choice really matters. Can you get to the bottom of this, or just try to escape? Who to listen to? Who to trust? Which side will you take? Will you finally break the Muller-Powell Principle? That depends entirely on you.

Make your way back to Earth through mysterious parallel dimensions littered with puzzles and secrets to discover, uncover mysterious connections between the worlds you visit and reveal the dark truth behind Delta Labs and your connection to them.

  • Solve various physics-based puzzles

  • Unique gameplay mechanics that involve an energy-manipulating weapon

  • Original setting that mixes sci-fi with surreal and esoteric themes.

  • Deeply thought-out story and lore. Each location and each character in the game has its own story revealed through various notes, environmental narratives, and characters' conversations.

  • The game features multiple endings that can be achieved through different choices

Last evaluated Sep 27, 2026
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