
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.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.

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
Lowest tracked price: CA$5.84 (Jul 7, 2026) · current best: CA$19.49.
73% positive reviews all-time · 3 peak players in the last 30 days.
Right now the cheapest offer for THE MULLER-POWELL PRINCIPLE is CA$19.49 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for THE MULLER-POWELL PRINCIPLE is CA$5.84 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
THE MULLER-POWELL PRINCIPLE peaked at 3 concurrent players on Steam in the last 30 days (highest on Jul 13, 2026). The player chart on this page updates daily.
Create a free price alert on this page and KingsPrice will email you when THE MULLER-POWELL PRINCIPLE drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.