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THE MULLER-POWELL PRINCIPLE
Welcome to a breathtaking storyline full of portals, solving puzzles with an energy-absorbing weapon, and other adventures in a sci-fi atmosphere! Can you travel through parallel dimensions and uncover the secrets of your past?
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via SteamSpy as of 2026-05-13.
“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…”
— a player, Steam review · 5 hrs played“Its ok. Graphics are good. Some of the puzzles are pretty frustrating. Maybe something to try if its cheap.”
— a player, Steam review · 14 hrs playedLatest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
TMPP is back! Announcing the Director’s cut and settlement with the publisher
Our game is back! Hello, everyone! We have great news for you. Long story short, we've been in a legal battle with our publisher for the past two years. We almost lost our IP and rights to the game. H
Hurry, it's the last day of the Spring Sale!
Hey, guys! Only until tomorrow can you buy your favorite games at an incredible discount! THE MULLER-POWELL PRINCIPLE is now available at 35% off, offering a fantastic deal for all of those who have b
Hotfix is Live!
Good day, everyone, we've just released another hotfix for THE MULLER-POWELL PRINCIPLE! Among other things, we changed the design of the barrels, fixed some issues with the generators, improved dialog
Happy new patch!
First of all, Happy New Year! We wish you all the best in 2024 and want to present you our major update! We carefully listened to all your suggestions and reworked many issues, locations, enemies, and
The Muller-Powell Principle: the first patch is out!
Hey, our first patch is live! We've been listening carefully to every review and feedback and made some improvements to the game. Check them out! Oh, and by the way, even more is coming soon: we're go
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-13.
| Genres | Action, Adventure, Indie |
| Player tags | Exploration · Puzzle · Action-Adventure · First-Person · Horror · Surreal · Action · Story Rich · Multiple Endings · Narration · Logic · Sci-fi (SteamSpy community voting) |
| Features | Single-player · Steam Achievements · Full controller support · Steam Cloud · Family Sharing |
| Languages | English * , Russian * |
| Controller | Full support |
| Achievements | 45 |
| Estimated owners | 20,000 – 50,000 (SteamSpy) |
Minimum system requirements (PC)
Minimum: Requires a 64-bit processor and operating system OS *: Windows 7/8/10 (64-bit) Processor: Quad-core Intel or AMD, 3 GHz or faster Memory: 8 GB RAM Graphics: GeForce GTX 970 or AMD equivalent Storage: 20 GB available space