
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.
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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
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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
The Muller-Powell principle, it's a soft mix of puzzles and walkathon/mini-novel. I'll give a mini-dive into each and tell you my thoughts at the end, so skip there if you don't care. Puzzles - I actually like the core mechanic of the game, it initially seems dull, as the puzzles start really easy, but once they feel you've grasped it, they QUICKLY ramp up the difficulty, and they also imply some mechanics from ones you've seen, assuming you've been paying attention, which I actually liked compared to the other parts of the game. The other parts - Unfortunately, there's these parts, getting between the puzzles is a chore, you're asked to stop and read "emails" to get exposition, which if you skip will have you missing half the actual story. Then walk while the characters tell you the other half of the story. It really saddens me they didn't take their visual learning aspect of the puzzles and lay it on here more. On top of all that, the game's got bugs (I got softlocked at least once by terrain bugs) and it isn't perfectly optimised either (the open areas tanked my frames on relatively new hardware), so be prepared for that. Overall, if this were a £40-£60, I'd tell you to leave it (There's many more games worth that money). At ~£15, I'll tell you it's fine if you're really interested in the mechanics. If it's on sale for 50% or more, then you've got a fun evening of gameplay.
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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
Игра меня зацепила своей идеей и обложкой. Но после часа игры становится все душнее и душнее. В эту игру невозможно просто играть: кривые анимации персонажей, огромное количество багов, озвучка персонажей вообще не понравилась. В игре ОТСУТСТВУЕТ бег. Ты буквально ходишь всю игру пешком. Я понимаю, что бег убран для решения загадок; но извините меня, ходить туда сюда 15 раз по целой локации ПЕШКОМ это катастрофически плохо. Когда на тебя бежит враг ты не можешь убежать. Когда ты тупишь на 1 месте и ходишь туда сюда тратиться очень много времени. Ты проверяешь новые методы решение, а без бега это невозможно проходить. К загадкам вопросов нет у меня в принципе , они реализованы круто. В каждых мирах было интересно осматриваться. Однако я затупил в измерении Темного Солнца. В моем прохождении Выдвижная платформа была горизонтальный, а у людей вертикальная. Я вот не понял , это баг или это рандомная генерация? Хотя в прохождении людей они просто багом прошли, а у меня так не получалось. Текстуры в игре мыльные, неприятные. У квантовой пушки есть ручка, но в чем проблема была отрисовать руку Гарри на ней? Просто это выглядит не полноценно. Затем в процессе игры я находил двери. И я могу с 80% вероятностью сказать, что это текстура взята из игры scp. Я помню, что видел такую подобную дверь. А вот взаимодействия с терминалами мне очень понравились. В игре мало сохранении, если ты умер или хочешь перезагрузиться назад, то придется проходить чуть ли ни с начала измерения или загадки. Жаль ручных сохранений нет. Если бы в игре присутствовал бег, я бы все простил ей. Без шифта это просто кошмар. Я видел там разрабы обещали режиссерскую версию, я надеюсь они многое там исправят.
I liked the story and the puzzels the voice acting was lacking in a few moments but the puzzels were fun. There were still a few bugs. But I hope the next patch will clear it up
very interesting game, highly reccomend
Man this game is disappointing. I understand being influenced by Half Life and Portal, but this game is basically that meme of copying homework. It really feels like this was supposed to be a mod for Half Life, but was decided to be it's own thing and changed enough to be legally distinct. The movement and controls do not feel good either. I was also hoping that it would be more puzzle focused, but it focuses way too much on the story. The story is not good either, but not bad. I'd say below average, just forgettable and not interesting. The puzzles are also either too easy or are simple but not straightforward. Most of them are just going back and forth between rooms or bring this item to the next location. Overall, would not recommend.
сясь
Супер странная игра! Мало того что сюжет замудрённый, так еще и убивает то что игру без гайдов не пройти всё супер нелогично, хотя может в этом и была суть разрабов. Попробуйте этот новый портал с элементами хоррора.
Its ok. Graphics are good. Some of the puzzles are pretty frustrating. Maybe something to try if its cheap.
Played the game again on 4-1-26 Really good game. Very enjoyable .. and puzzles ... and more puzzles .. did i mention puzzles and doors and blue and amber electricity? yes those are puzzles too ... if you love puzzles as much as I Don't!! then this game is for you.. Surprisingly some puzzles took me forever to figure out. THankfully the developer added audio clues to repeat and I was able to figure out the goal in each situation. Fun. well.. was fun .. too many puzzles and i forgot I'm playing a game .. walking away from my computer now .. way too much to look online or YouTube for the solutions .. But HEY .. at least they put a few puzzles in this game .. I mean who doesn't like puzzles on top of puzzles with puzzles on the side and a warm portion of more puzzles with .. breakfast, lunch, and dinner and snacks .. and in between snacks . . . PUZZLES!!
Great story concept that starts getting "disentangled". The sci-fi premise and dimensional travel story are genuinely unique and interesting in the beginning then degrades and goes downhill. The Muller-Powell Principle COULD HAVE BEEN a fantastic sci-fi narrative game - But it wasn't. It sets up an intriguing, reality-bending world that immediately grabs your attention. Unfortunately, the writers committed a cardinal sin by having a major faction introduced at the beginning - never to be seen again until maybe you get the specific ending and then its only a mention. And also a cryptic character alluded to - then never mentioned again. There is also a huge plot hole as well. Adding insult to injury, the developers chose to bury that bad story under miles of artificial padding and some pretty bad mechanical coding. You aren't playing a clever puzzle simulator; you are actively wrestling with a broken physics engine. The gravity-tether mechanics are incredibly janky, dropping items constantly due to hyper-sensitive collision boundaries. Worse, the game's internal scripting frequently glitches out, forcing you to spend literal hours repeating things over and over and over again. It is a waste of time. Hours of my life gone and never to return. Then when you get to the ending(s) they are absolute garbage and you go "I spent hours for this?!?!". SAVE YOURSELF THE AGONY - Leave this game alone and let it die in another dimension.
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Players by region
Where this game's players are, estimated from review languages.
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