
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.
Modeled estimate, not a reported figure. How we estimate →
Media

About

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
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English*, Russian*languages with full audio support
Engagement
Hours played at review time, across 41 reviews with recorded playtime.
Reviews
Themes across 41 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
What I wanted was a cool sciency game in the vein of Portal and Half Life with some unique mechanics and puzzles. And The Muller-Powell Principle is kind of that. The issue is that it seems to have forgotten what makes solving puzzles fun - and that's solving them. The game has a huge amount of potential that's constantly squandered by characters who suffer from 'won't shut the ♥♥♥♥ up syndrome' and talk to you non-stop spoiling exploration, puzzles, the story, etc. I have extremely low patience for any game that doesn't respect my intelligence enough to play their game and feels the constant need to lead me around like a little baby. If I wanted someone to always tell me everything that was going on, I'd be reading a book. It certainly doesn't help that the voice acting is really not up to par and the graphics have that weird Unreal Engine blobbiness that's pretty hard on the eyes. Maybe if a patch released that turned off all the constant chatter I could give this another go, but it's gonna be a no from me dawg. So sad, because this is exactly the type of game I should fall in love with.
The good: The graphics are OK, and the premise of being on a space station going through a spooky disaster is an appealing story. The gun is a cool concept. The bad: - It's as if it didn't have playtesters separate to the developers who already know the levels. Even basic navigation through the levels is mostly painful and not intuitive. - The story / dialogue is fairly weak. - There's not much going on / the world seems pretty empty. Unfortunately I can't at all recommend it in the slightest. If they ever make a sequel then maybe it would address the issues and be good, but currently it seems unfinished.
it's like a 2/10 indie project being sold as a legitimate game
I know there are hard spots, but if you like portal like games with a little more, then this is the game for you.
I've been trying to finish this game for months. Every time I play it I get bored after about 10-15 minutes so I don't recommend it. I had to mute the voices once the annoying yank woman started moaning on the radio constantly, I will probably never complete this but I hope there is an option to kill her at the end of the game if I do.
What if you mix Half-Life, Portal, and a little of BioShock? You get Muller-Powell. A good game, with a ton of references to the games listed above. The story is quite convoluted, but at the same time interesting. I read all the notes and all the emails on the computers (to my surprise). Perhaps that's the only reason I understood the story better. It's clear that this is an indie game and the budget is very limited, but I would have liked the story to be told through gameplay and some dialogue or cutscenes, rather than notes. But what can you do, notes are everywhere now. The graphics are quite nice. You can carry all sorts of things, which comes in handy for solving many puzzles. I got stuck on 2-3 levels in the entire game because their solutions were kind of absurd, in my opinion. The levels are completely different, and I personally didn't get bored with them. I've completed all the endings. I wonder which one is considered canon. I got all the achievements. The one about the electric kettle was the funniest, especially when, towards the end of the game, I found a real photo in a frame with a melted kettle. I definitely recommend playing it.
I bought this game for $7.49 during the Winter Sale and it was worth it. Fun game, good concept, interesting story. However, there are a few negatives: 1. Some of the puzzles are not intuitive at all. I spent at least 30 minutes trying to solve one puzzle and I eventually just brute forced it because there were no reasonable clues given 2. There are only autosaves. There was one point where it had been 20-30 minutes since my last save and the game crashed. That sucked. (It was at the color puzzle right before the achievement "That's a bit immoral" - which was also a puzzle without any real clues. This is not against the publishers, but a warning to those who play this: The walkthroughs on YouTube are out of date. Sometimes they match the puzzles in the game, sometimes they don't. However, overall this is a fun game. It has Half Life/Portal vibes in the best way.
It's a kind of Portal game where you are playing a sort of Gordon Freeman like scientist. With a lot of multi-dimensional ideas. If you like this type of game with great graphics and awesome lines to listen to... the game is for you. It's a shame than the game didn't had more visibility on steam.
Видимо разработчики данной игры вдохновились играми Portal и Half Life Xen. Я по крайней мере много увидела от туда разных отсылок. Вселенная ктулфу так же нас преследует постоянно. В игре есть три концовки. Что до геймплея, в некоторых местах мне хотелось убить разработчиков! Или просто разбить клавиатуру в дребезги! Ах да, имейте ввиду что на уровне с огромным большим кристаллом у вас будет горизонтальная выдвижная платформа, а не вертикальная. Бог в помощь и по больше нервов для решения этой самой отвратительной головоломки. В общем то рекомендую игру однозначно купить и по играть.
Pros: • Generally good game with [b]Half-Life 1[/b] vibes. Although it reminds me [b]Soma[/b] and [b]Moons of Madness[/b] too. Cons: • Some game-breaking bugs • Some unnecessarily high difficulty peaks Summary: An OK game, but require some polishing. And TESTING.
Related
Related
Trends
Modeled estimate over time, reconstructed from Steam's monthly review histogram.
Momentum
Pace estimated from the game's recent review growth (our daily snapshots) at its own sales-per-review ratio — a momentum signal, not booked sales.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
Related
| Her World | $106.9K | 488 | 97% | $14.99 |
| Silicon Dreams | cyberpunk interrogation | $106.9K | 254 | 94% | $14.99 |
| SPARK IGNITES | $107K | 260 | 79% | $12.99 |
| Drifter Star: Evolution | $107K | 1.1K | 74% | $3.99 |
| Serious Sam VR: The Second Encounter | $106.9K | 255 | 86% | $19.99 |
| Star Trek™ : 25th Anniversary | $106.8K | 150 | 91% | $19.99 |
Related
| 7 Days to Die | $457.9M | 275.4K | 87% | $44.99 |
| Mount & Blade II: Bannerlord | $413.7M | 227.5K | 88% | $49.99 |
| Ready or Not | $296.3M | 259.8K | 79% | $49.99 |
| Sons Of The Forest | $261.2M | 279.7K | 89% | $29.99 |
| Clair Obscur: Expedition 33 | $243.3M | 273.1K | 95% | $49.99 |
| Palworld | $231.3M | 374.6K | 94% | $20.99 |