Free games like PRINCIPIA: Master of Science

Below are 8 free-to-play Steam games similar to PRINCIPIA: Master of Science, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like PRINCIPIA: Master of Science page.

1
Virtual Cottage
Free-to-play alternative to PRINCIPIA: Master of Science — no purchase or trial window. Shares Indie and Simulation with PRINCIPIA: Master of Science.
Virtual Cottage gives you a comfy place to rest and be productive without any distractions. Open the game, set yourself a goal and enjoy the atmosphere.
2020IndieSimulationFree To PlayFreeDeck PlayableFree to playSimilar games →
2
Steam Engine Simulator
Free-to-play alternative to PRINCIPIA: Master of Science — no purchase or trial window. Shares Simulation with PRINCIPIA: Master of Science.
The Steam Engine Simulator shown on AngeTheGreat's YouTube channel.
2023SimulationFreeDeck VerifiedFree to playSimilar games →
3
We Become What We Behold [Fan-Made Port]
Free-to-play alternative to PRINCIPIA: Master of Science — no purchase or trial window. Shares Indie with PRINCIPIA: Master of Science.
a game about news cycles, vicious cycles, infinite cycles
2019IndieCasualFreeDeck PlayableFree to playSimilar games →
4
DORONKO WANKO
Free-to-play alternative to PRINCIPIA: Master of Science — no purchase or trial window. Shares Simulation with PRINCIPIA: Master of Science.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
2024ActionSimulationFree To PlayFreeFree to playSimilar games →
5
Landfall Archives
Free-to-play alternative to PRINCIPIA: Master of Science — no purchase or trial window. Shares Indie with PRINCIPIA: Master of Science.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
2023ActionStrategyIndieFreeFree to playSimilar games →
6
SuchArt: Creative Space
Free-to-play alternative to PRINCIPIA: Master of Science — no purchase or trial window. Shares Indie and Simulation with PRINCIPIA: Master of Science.
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
2021ActionIndieAdventureFreeDeck PlayableFree to playSimilar games →
7
The Children of Clay
Free-to-play alternative to PRINCIPIA: Master of Science — no purchase or trial window. Shares Indie and Simulation with PRINCIPIA: Master of Science.
The Children of Clay is a short stop motion archeology horror game, where you have to study an ancient artefact and discover its dark secret.
2025IndieAdventureSimulationFreeFree to playSimilar games →
8
Samorost 1
Free-to-play alternative to PRINCIPIA: Master of Science — no purchase or trial window. Shares Indie with PRINCIPIA: Master of Science.
Explore the beginnings of the Samorost series in the space gnome’s original bite-sized adventure, formerly released in 2003. Now with remastered sounds, enhanced graphics, and new music by Floex.
2021IndieAdventureCasualFreeFree to playSimilar games →

Ranked picks