
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 →
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
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Engagement
Reviews
Themes across 46 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
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.
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.
Media

Related
Related
Price dynamics, follower growth, revenue and sales trajectories with interactive tooltips
This and every other Pro feature is free until October 20, 2026. A free account is all it takes.
Languages: English*, Russian*languages with full audio support
Hours played at review time, across 46 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
one of the stressing games i've ever played, that's a shame considering there was a lot of potential, let's start by talking about the pros: the level desing was great, there were various different places in each level and they were all beautiful, some levels had a well constructed puzzles that remembered me why i've bought this game. The pros part is over, let's continue by talking about the cons this time: the characters were too much garrulous (i've turned off the voice volume bc of that), most puzzles were just fake puzzles which can be translated as "tries everything you see till' something happens to get to the next level", too many bugs (most of them are just unforgivable), boss fights were the lamest things i've ever experienced (in one of those boss fights, you start to get the enemy before your eyes and it was the same boss fight that crashed the game, pathetic), always connect to the boss fights, the green phantom enemy was a pain in the ass all the time. Now i want to address the dev team (or those responsible for this disaster), i’m sorry to tell you but you have to repeat a few years of development and programming bc we're not close to good enough, i think it was the biggest disappointment i've ever received from a small studio so far
dumb puzzles, dumb story, dumb philosophy or whatever it's trying to impart. it's deep if you whatever you slipped on in the parking lot is deep.
I wanted to like this game and I really did. Up until they decided to ruin their neat puzzle game with the lamest 'horror' elements possible. Chase sequences are right up there with escort missions as far as the worst game mechanics of all time go, and there are plenty of them. Voice acting was also shockingly poor except for Eugene who I think is the best part of the game.
во
I would give this game a mixed rating if I could. Its a neat concept and some of the puzzles are fun, but its most incredibly annoying to play.
Игра очень интересная, красивая и атмосферная, на визуальном уровне видно влияние Black Mesa, но местами очень нудно даже для любителя Portal, тем не менее это не портит общего впечатления)
las mecanicas son muy repetitivas y la mayoria son molestas, ademas del jodido fantasma que te persigue y te atrapa cuando se le da la gana, porque se le da la gana
Красивые скрины, красивый трейлер, но играть в это.. скучно?
Selling now
See how fast this game is selling right now — estimated copies and revenue per day from recent review growth.
Players by region
Where this game's players are, estimated from review languages.
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $499.5K | 1.4K | 82% | $15.99 | |
| — | 0 | — | — | |
| — | 0 | — | — | |
| — | 0 | — | — | |
| $487.9K | 1.9K | 77% | $9.99 | |
| $490.2K | 4.6K | 67% | $4.99 |
Related
| Game | Estimated lifetime revenue | Reviews | Review score | Price |
|---|---|---|---|---|
| $135.2K | 466 | 82% | $19.99 | |
| $135.2K | 1.2K | 90% | $2.99 | |
| $135.2K | 465 | 80% | $9.99 | |
| $135.2K | 540 | 54% | $9.99 | |
| $135.2K | 356 | 56% | $11.99 | |
| $135.1K | 589 | 94% | $8.99 |