- #1 SpaceEngine
97% matchOverwhelmingly Positive96% of 16,417 reviews2019
Dev: Cosmographic Software
Windows
Median: 2.1 hrsMean: 44.3 hrs≥1hr: 66%
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
Why similar: Casual 100%
- #2 SE VR World Demo
96% matchMostly Positive77% of 75 reviews2024
Dev: Sektan
Windows
This game is a playable technology showcase that introduces game mechanics which will be in a new game.
- #3 Project Eagle: A 3D Interactive Mars Base
96% matchMostly Positive76% of 545 reviews2018
Dev: Blackbird Interactive
Windows
Median: 12 minMean: 3.2 hrs≥1hr: 13%
An interactive art demo that showcases what a future base on Mars could look like. Project Eagle isn't a game - but an exploration of mankind's possible future.
- #4 Resonite
95% matchVery Positive80% of 1,596 reviews2023
Dev: Yellow Dog Man Studios
Windows
Enter a novel digital universe with infinite possibilities. Whether you resonate with people around the world in a casual conversation, playing games and socializing or you riff off each other when creating anything from art to programming complex games, you'll find your place here.
Why similar: Game Development 57.9% ★, Software 17.2% ★, Utilities 16.8% ★, Casual 8%
- #5 Earthlingo
94% matchVery Positive89% of 233 reviews2019
Dev: Earthlingo
Windows · Linux
Explore a planet, learn a language
Why similar: Casual 100%
- #6 Universe Sandbox
94% matchOverwhelmingly Positive96% of 32,034 reviews2015
Dev: Giant Army
Windows · Mac
Median: 2.4 hrsMean: 24.4 hrs≥1hr: 71%
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
Why similar: Casual 100%
- #7 Unreal Physics
93% matchMostly Positive73% of 224 reviews2024
Dev: Jilted Generation Productions
Windows
Unreal Physics is a exploration of in-game physics like never before, this dynamic 3D sandbox features a mesmerizing collection of demos, showcasing stunning visuals and realistic simulations. It's a playground of endless possibilities where creativity meets the cutting edge of physics technology
Why similar: Game Development 85.5% ★, Casual 14.5%
- #8 Endix
91% matchMostly Positive73% of 132 reviews2026
Dev: EndixPub: Endix
Windows
Explore unique & immersive booths from your favorite games. Watch exclusive trailers, compete in mini-games, and connect with players, creators & developers from around the world. All inside a living, free multiplayer experience.
Why similar: Game Development 91.8% ★, Casual 8.2%
- #9 One Dreamer: Prologue
90% matchOverwhelmingly Positive96% of 797 reviews2020
Dev: One Dreamer CompanyPub: F2House
Windows · Mac · Linux
Modify the world around you with pseudocode as you journey through blended realities and discover why Frank became a game developer in the first place.
Why similar: Game Development 90.5% ★, Casual 9.5%
- #10 Homebrew - Patent Unknown
91% matchMostly Positive72% of 974 reviews2014
Dev: Copybugpaste
Windows
Median: 54 minMean: 12.3 hrs≥1hr: 47%
Unleash your creativity and craft anything from flying cars to jet-powered toilets.Fair warning: there's a learning curve. But once you've got it, the sky's the limit for your creations!While active development is paused, we focus preserving the game and keeping it accessible.
Why similar: Game Development 78% ★, Utilities 22% ★
- #11 Space Mechanic Simulator: Prologue
89% matchMostly Positive80% of 64 reviews2023
Dev: Atomic JellyPub: Wildlands Interactive
Windows
Space Mechanic Simulator: Prologue is a story prelude to the full version, which will introduce you to the world of cosmic repairs, greedy corporations, and cutting-edge technology.
- #12 The Planet Crafter: Prologue
87% matchOverwhelmingly Positive96% of 10,709 reviews2021
Dev: Miju Games
Windows
Median: 1.4 hrsMean: 3.9 hrs≥1hr: 56%
Experience the first stages of terraforming an entire planet in this space survival open world terraforming crafting game prologue. Explore, survive, collect, build your base then create oxygen, heat and pressure to make an hostile planet livable for humanity.
- #13 Welcome to Light Fields
89% matchVery Positive95% of 281 reviews2018
Dev: Google
Windows
Median: 12 minMean: 6.6 hrs≥1hr: 26%
Welcome to Light Fields. Experience real-world reflections, depth, and translucence like never before in VR. Explore the Gamble House, Mosaic Tile House, and the Space Shuttle Discovery. These navigable stills showcase the emerging technology Google is using to power its next generation of VR content.
Why similar: Casual 100%
- #14 Plasma
86% matchVery Positive90% of 1,142 reviews2023
Dev: Dry CactusPub: Dry Licorice
Windows
Median: 30 minMean: 5.3 hrs≥1hr: 38%
Plasma is a pure engineering sandbox. Use advanced visual programming and robotics tools to create anything you can imagine.
Why similar: Game Development 100% ★
- #15 ERRANTE
86% matchMostly Positive78% of 68 reviews2022
Dev: Errant Interactive
Windows
This is an experimental project, a sandbox life simulator that gives you the power to suggest how the game should evolve, which features we should focus on, which slice of life to tell and everything you can imagine.
- #16 Metaverse
88% matchMixed43% of 77 reviews2016
Dev: Metaware Limited, LLC
Windows · Mac
In Metaverse you will dig, discover, design, deploy, and defend. Explore, build upon, or tear apart your own procedurally generated voxel planet. And now in the early stages of our multiplayer implementation, help conquer or build the planets of others.
- #17 WorldMaker
84% matchMostly Positive73% of 110 reviews2022
Dev: Maker Interactive
Windows
WorldMaker is a tool for creative users that allows you to create photorealistic 3D Worlds using drag-and-drop controls. Transfer ideas directly from your head to a 3D World in seconds. Utilize our library of 1400 objects to create 3D Worlds quickly, with graphics powered by next-gen Unreal Engine 5
Why similar: Software 81.4% ★, Casual 18.6%
- #18 subROV : Underwater Discoveries
82% matchVery Positive91% of 68 reviews2022
Dev: sqr3lab
Windows
Pilot a remotely operated submarine and explore the oceans! Defy the darkness and crushing pressure of the deeps as you chart unknown regions and study new species of ocean life.
- #19 Cranium Conundrum
84% matchMixed41% of 87 reviews2016
Dev: Falling Star GamesPub: Sometimes You
Windows
Median: 3.2 hrsMean: 4.8 hrs≥1hr: 96%
Cranium Conundrum is a physics-based puzzle platformer taking place in the dream worlds that you create!
Why similar: Casual 100%
- #20 ST World
81% matchMixed61% of 86 reviews2023
Dev: ST Platform
Windows · Mac
Discover ST World - the next-generation voxel world! Build stunning high-resolution sandbox worlds with easy-to-use tools and AI features. Explore Riftwalkers' open-world adventures and join a thriving community.
Why similar: Software 58.7% ★, Utilities 41.3% ★
- #21 EarthKart: Google Maps Driving Simulator
77% matchMostly Positive80% of 1,483 reviews2023
Dev: Colton HutchinsPub: Cold Hut Games
Windows · Mac
3D Google Earth Driving Simulator
Why similar: Casual 100%
- #22 Dev Inc
79% matchMixed60% of 86 reviews2021
Dev: Huntah
Windows
An in depth game development simulation game
Why similar: Game Development 89.9% ★, Casual 10.1%
- #23 REAL MOON
75% matchMixed68% of 115 reviews2025
Dev: historia Inc.
Windows
Explore a precisely recreated lunar surface built from real data and a JAXA-backed simulation.
- #24 Lacuna Passage
78% matchMixed65% of 105 reviews2017
Dev: Candescent Games
Windows · Mac
Explore the vast terrains of Mars, generated from real NASA satellite data, and survive threats like dust storms by discovering randomized supply caches and habitats. Adventure on foot or in driveable rovers with this otherworldly first-person sandbox.
- #25 OVERVIEW (A Walk Through The Universe)
78% matchMostly Positive72% of 123 reviews2018
Dev: Orbital Views
Windows
Overview is a mind-changing experience about our position in the Universe. With a narrative and an interactive mode, it features realistic imagery and accurate data to leave you in awe and wonder at the vastness of the Cosmos.
Why similar: Casual 100%
- #26 Wildshape - Map Editor + VTT (free demo)
77% matchMostly Positive72% of 101 reviews2021
Dev: DLDevPub: Self Published
Windows · Mac · Linux
An all new way to create and play tabletop games in beautiful animated 3D maps!
Why similar: Software 51.8% ★, Utilities 48.2% ★
- #27 Irrational Exuberance: Prologue
76% matchVery Positive86% of 354 reviews2016
Dev: Buffalo Vision
Windows
Median: 18 minMean: 12.1 hrs≥1hr: 31%
Awaken on an asteroid in deep space, underneath comets and giant stars. Designed for HTC Vive, Prologue introduces the critically-acclaimed world of Irrational Exuberance—a fever dream of interstellar interactions. Take the first step on a journey of risk, wonder and discovery.
Why similar: Casual 100%
- #28 The Plane Effect Prologue
75% matchVery Positive86% of 161 reviews2021
Dev: Innovina/StudioKikuPub: PQube
Windows
Play the first 30 minutes of a dystopian isometric adventure, following a lonely office worker as he attempts to return home in the face of impossible odds. Experience a remarkable journey expertly brought to life with gorgeous visuals, crafted and tailored by VFX experts.
Why similar: Casual 100%
- #29 WebbVR: The James Webb Space Telescope Virtual Experience
76% matchVery Positive90% of 71 reviews2018
Dev: Space Telescope Science Institute
Windows
Join the James Webb Space Telescope in orbit beyond the Moon and explore the universe from its perspective. Planetary systems are born, galaxies form, and stars emerge from within colorful nebulas—all before your eyes.
Why similar: Casual 100%
- #30 Generation Streets
74% matchMostly Positive74% of 206 reviews2020
Dev: Roman Shuvalov
Windows · Linux
Generation Streets - a game based on a real-world map. Load your hometown, find your home and this casual game will start giving you very unexpected impressions. In the free version of the game, only limited territories are available.
Why similar: Casual 100%
- #31 Space Simulation Toolkit
73% matchVery Positive81% of 521 reviews2020
Dev: Pavel Kudinov
Windows
Physics sandbox game that uses a graphics card as a supercomputer. Change the laws of physics, design mechanisms, create A-Life worlds and inhabit them with living beings, experiment with evolution and AI.
- #32 Observe
72% matchPositive90% of 51 reviews2025
Dev: Kisotik Games
Windows
A world that plays itself. Watch nations battle for domination across a 3,400-region map, build infinite alternate histories, meddle with god-like powers, or program your own AI countries and climb the global ranked ladder.
- #33 OUTBRK
70% matchVery Positive82% of 3,477 reviews2024
Dev: Sublime
Windows
Median: 5.5 hrsMean: 18.6 hrs≥1hr: 83%
Storm Chasing Simulator
Why similar: Casual 100%
- #34 Ocean World: Eden Crafters Prologue
69% matchVery Positive91% of 7,602 reviews2024
Dev: Osaris Games
Windows
Median: 1.3 hrsMean: 3.1 hrs≥1hr: 55%
Survive, craft, and automate in this free prologue set on one of the planets you can transform in Eden Crafters, an open-world game where you play solo or with friends to turn a hostile planet into a habitable haven for humanity.
- #35 ASTROBOTANICA
71% matchMixed68% of 98 reviews2026
Dev: Space Goblin Studio
Windows
Science-driven exploration adventure on prehistoric Earth with a relaxing vibe. Farming, crafting, puzzle-solving, and exploration on Prehistoric Earth, where you arrive as an alien botanist who is very good at plant research, but... can't breathe oxygen.
- #36 Canvas of Kings
70% matchVery Positive93% of 855 reviews2023
Dev: Hannes Breuer
Windows · Mac · Linux
Median: 1.4 hrsMean: 6.2 hrs≥1hr: 55%
Canvas of Kings is a minimalistic mapmaking tool that focuses on randomness and auto-generated elements on user-definable and interactive paths, plots and rooms.
Why similar: Software 100% ★
- #37 Sansar
74% matchMixed53% of 620 reviews2018
Dev: Sansar, Inc
Windows
THE ULTIMATE PLAYGROUND FOR CREATIVE MINDS AND VIRTUAL EXPLORERS. Experience anytime, anywhere on PC & VR!
Why similar: Casual 100%
- #38 SenS
72% matchMostly Positive76% of 53 reviews2022
Dev: Limasse Five
Windows
In the Beginning was the Nothingness... Enter the Unknown, explore the Infinite, find your own SenS.
Why similar: Game Development 100% ★
- #39 Realities
73% matchMostly Positive75% of 268 reviews2016
Dev: realities.io
Windows
Median: 24 minMean: 7.4 hrs≥1hr: 30%
Explore what was out of reach before - travel to mesmerizing real world places and discover their stories!
- #40 Demolish & Build 3 Prologue
71% matchMostly Positive71% of 85 reviews2024
Dev: Demolish Games S.A.
Windows
Demolish & Build 3 Prologue is a sneak peek at the driving, demolition, building mechanics and physics from the upcoming Demolition & Build 3. In the game, you demolish old structures and build new, both with hand tools and heavy duty machines.
Why similar: Casual 100%
- #41 Mash Box
68% matchVery Positive89% of 1,038 reviews2024
Dev: Mash Games
Windows
Median: 1.1 hrsMean: 8.0 hrs≥1hr: 52%
Mash Box is a prototype sandbox game from an indie team, offering endless creative possibilities. Be part of its evolution with regular updates and help shape the tech foundation for future games. Dive in and influence the development of something special!
Why similar: Casual 100%
- #42 Deconstruction Simulator: Prologue
68% matchMostly Positive73% of 1,288 reviews2025
Dev: Games Incubator
Windows
Median: 36 minMean: 2.9 hrs≥1hr: 35%
Deconstruction Simulator: Prologue is the ultimate demolition simulator, offering you complete freedom of action and a wide array of contracts to complete. Get ready for spectacular destruction.
Why similar: Casual 100%
- #43 PolyDome
71% matchVery Positive89% of 54 reviews2016
Dev: Plan8
Windows
Step into the Polydome, a musical environment that changes and progresses when you interact with it.
Why similar: Casual 100%
- #44 a pig game: A Pee Wee Premiere
67% matchVery Positive93% of 67 reviews2025
Dev: McGraw Game JamsPub: PineyWoods Corner, LLC
Windows
A polished dive into the lessons of playful prototyping! This jam served as a feature-complete instructional sandbox for university students exploring digital asset pipelines, the Steamworks backend, and the limitations of AI-assisted design. Short, experimental, and delightfully ceramic!
Why similar: Casual 100%
- #45 Emergence
69% matchVery Positive84% of 100 reviews2020
Dev: Universal Everything
Windows
An awe-inspiring open-world VR art experience exploring human behaviour, the individual and the collective. Immerse yourself among thousands of strangers. Watch from above as your movements influence the crowd in changing environments that are both wondrous and intimidating.
Why similar: Casual 100%
- #46 Under A New Sun
67% matchMostly Positive76% of 400 reviews2023
Dev: New Horizon Games
Windows
While searching for a new home, an unexpected failure in your ship has left you stranded on a planet surprisingly similar to Earth. Discover a vast open world, hunt for food, develop technologies, and build yourself a new home to survive!
- #47 Under Pressure
67% matchVery Positive92% of 83 reviews2023
Dev: Antibore
Windows
What happens when you make a VR game only about Pressure Washers? From cleaning any object imaginable, playing soccer or volleyball up to flying - Under Pressure is a multiplayer playground that’s all around what you can do with a power washer in your hands.
Why similar: Casual 100%
- #48 StarbaseSim
65% matchVery Positive95% of 61 reviews2025
Dev: AshtorakSimGames
Windows · Linux
Operate the Starship space launch system and learn how to catch a rocket to understand what it takes to colonize Mars in this ever-evolving simulation of SpaceX Starbase Texas.
- #49 Planetary Life
63% matchVery Positive94% of 919 reviews2025
Dev: Sotenbox
Windows
Median: 3.5 hrsMean: 8.3 hrs≥1hr: 88%
Manipulate climate, add plants and evolve creatures in this planet and life sandbox simulation game. From cells to civilizations, spread life throughout the whole planet. Or just enjoy watching your creation burn!
- #50 THE MULLER-POWELL PRINCIPLE: Foreword
66% matchVery Positive82% of 271 reviews2023
Dev: Three Dots GamesPub: Take Aim Games
Windows
This prologue was created to present an overall concept of the main game through a pair of gameplay hours to introduce you to some of the game’s mechanics, creatures, and ideas.