1
|
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
|
Kerbal Space Program
Steam
Publisher:
Private Division
Developer:
Squad
|
Apr 27, 2015
10 years, 4 months ago
|
$39.99
|
AdventureBuildingComedyDifficultEducationExplorationFunnyIndieModdableOpen WorldPhysicsReplay ValueSandboxSci-fiScienceSimulationSingleplayerSpaceSpace SimStrategy
|
287,183 |
72,758 |
10/10 |
~$56 million
|
2
|
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
|
Portal 2
Steam
Publisher:
Valve
Developer:
Valve
|
Apr 18, 2011
14 years, 4 months ago
|
$9.99
|
3D PlatformerActionAction-AdventureAdventureAtmosphericCo-opComedyDark HumorFPSFemale ProtagonistFirst-PersonFunnyLevel EditorPhysicsPlatformerPuzzlePuzzle PlatformerSci-fiScienceStory Rich
|
N/A |
162,058 |
10/10 |
~$31 million
|
3
|
Red Barrels invites you to experience mind-numbing terror, this time with friends. Whether you go through the trials alone or in teams, if you survive long enough and complete the therapy, Murkoff will happily let you leave… but will you be the same?
|
The Outlast Trials
Steam
Publisher:
Red Barrels
Developer:
Red Barrels
|
Mar 5, 2024
1 year, 6 months ago
|
$39.99
|
ActionAction-AdventureAdventureAlternate HistoryAtmosphericCharacter CustomizationCo-opDarkDark HumorFirst-PersonHorrorManagementMultiplayerPsychological HorrorPvERealisticScienceStealthSurvivalSurvival Horror
|
183,062 |
27,896 |
9/10 |
~$21 million
|
4
|
Kerbal Space Program 2 is the sequel to the acclaimed space-flight simulation game Kerbal Space Program. Enter the next generation of space adventure with exciting new parts, stunning visuals, fully revamped UI and Map View, and rich new environments to explore.
|
Kerbal Space Program 2
Steam
Publisher:
Private Division
Developer:
Intercept Games
|
Feb 24, 2023
2 years, 6 months ago
Early Access
|
$49.99
|
AdventureAtmosphericBuildingDifficultEarly AccessExplorationFunnyIndieModdableMultiplayerOpen WorldPhysicsRealisticSandboxSci-fiScienceSimulationSingleplayerSpaceSpace Sim
|
172,065 |
21,077 |
5/10 |
~$20 million
|
5
|
ICARUS is a PvE survival game for up to eight players. Explore a savage wilderness in the aftermath of terraforming gone wrong. Survive the Open World, complete timed Missions or build your Outpost. Explore, build, craft and hunt while seeking your fortune and prospecting for exotic matter.
|
ICARUS
Steam
Publisher:
RocketWerkz
Developer:
RocketWerkz
|
Dec 3, 2021
3 years, 9 months ago
|
$34.99
|
AdventureBase BuildingBuildingCo-opCraftingExplorationFirst-PersonMiningMultiplayerNatureOnline Co-OpOpen WorldOpen World Survival CraftPvERealisticSandboxScienceSpaceSurvivalThird Person
|
240,158 |
23,029 |
7/10 |
~$15 million
|
6
|
Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.
|
Portal
Steam
Publisher:
Valve
Developer:
Valve
|
Oct 10, 2007
17 years, 10 months ago
|
$9.99
|
3D PlatformerActionAdventureAtmosphericClassicComedyDark HumorFPSFemale ProtagonistFirst-PersonFunnyPhysicsPlatformerPuzzlePuzzle PlatformerSci-fiScienceShortSingleplayerStory Rich
|
N/A |
76,144 |
10/10 |
~$15 million
|
7
|
Be the architect of your own universe with Spore, an exciting single-player adventure. From Single Cell to Galactic God, evolve your creature in a universe of your own creations.
|
SPORE™
Steam
Publisher:
Electronic Arts
Developer:
Maxis™
|
Dec 19, 2008
16 years, 8 months ago
|
$19.99
|
AdventureAliensCartoonCartoonyCasualColony SimColorfulComedyCuteExplorationFamily FriendlyFunnyGod GameOpen WorldResource ManagementSandboxSci-fiScienceSimulationSpace
|
92,379 |
35,705 |
9/10 |
~$14 million
|
8
|
Abiotic Factor is a survival crafting experience for 1-6 players set in the depths of an underground research facility. Caught between paranormal containment failure, a military crusade, and chaos from a dozen realms, the world’s greatest minds must survive against the universe’s biggest threats.
|
Abiotic Factor
Steam
Publisher:
Playstack
Developer:
Deep Field Games
|
Jul 22, 2025
1 month, 1 week ago
|
$34.99
|
AdventureAliensBase BuildingBuildingCo-op CampaignCraftingEarly AccessExplorationFPSFirst-PersonImmersive SimMultiplayerOnline Co-OpOpen World Survival CraftPvESandboxSci-fiScienceSimulationSurvival
|
114,717 |
19,753 |
10/10 |
~$13 million
|
9
|
Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood.
|
Timberborn
Steam
Publisher:
Mechanistry
Developer:
Mechanistry
|
Sep 15, 2021
3 years, 11 months ago
Early Access
|
$34.99
|
3DAutomationBase BuildingBuildingCity BuilderColony SimEarly AccessFarming SimLevel EditorManagementNaturePhysicsPost-apocalypticSandboxScienceSimulationStrategyStylizedSurvivalVoxel
|
166,308 |
19,162 |
10/10 |
~$13 million
|
10
|
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.
|
Universe Sandbox
Steam
Publisher:
Giant Army
Developer:
Giant Army
|
Aug 24, 2015
10 years ago
Early Access
|
$29.99
|
AtmosphericCasualDestructionEarly AccessEducationExplorationFamily FriendlyGod GameIndieOpen WorldPhysicsRealisticRelaxingSandboxSci-fiScienceSimulationSingleplayerSpaceSpace Sim
|
170,725 |
17,185 |
10/10 |
~$9.9 million
|
11
|
The Talos Principle is a first-person puzzle game in the tradition of philosophical science fiction. Made by Croteam and written by Tom Jubert (FTL, The Swapper) and Jonas Kyratzes (The Sea Will Claim Everything).
|
The Talos Principle
Steam
Publishers:
Croteam, Devolver Digital
Developer:
Croteam
|
Dec 11, 2014
10 years, 8 months ago
|
$29.99
|
ActionAdventureArtificial IntelligenceAtmosphericDifficultExplorationFirst-PersonGreat SoundtrackIndieMultiple EndingsMysteryPhilosophicalPost-apocalypticPuzzleRobotsSci-fiScienceSimulationSingleplayerStory Rich
|
177,639 |
16,643 |
10/10 |
~$9.6 million
|
12
|
Compete in over 500 cars on 30 world-famous tracks – now featuring the legendary Fujimi Kaido! Play the new 20th Anniversary Tour and obtain special rewards.
|
Forza Motorsport
Steam
Publisher:
Xbox Game Studios
Developer:
Turn 10
|
Oct 9, 2023
1 year, 10 months ago
|
$69.99
|
Automobile SimCharacter CustomizationDrivingFamily FriendlyFirst-PersonImmersive SimManagementMultiplayerOpen WorldPhysicsPvPRacingRealisticScienceSimulationSingleplayerSportsThird PersonTransportationVR
|
35,120 |
5,299 |
6/10 |
~$7.1 million
|
13
|
Make your dream cars a reality with Automation’s unparalleled car and engine design tools. Gain a competitive edge through smart engineering and business decisions to help you build an automotive empire. Will you become an industry leader, or just a footnote in automotive history?
|
Automation - The Car Company Tycoon Game
Steam
Publisher:
Camshaft Software Ltd
Developer:
Camshaft Software Ltd
|
Mar 12, 2015
10 years, 5 months ago
Early Access
|
$29.99
|
AutomationAutomobile SimBuildingCraftingEarly AccessEconomyEducationImmersive SimIndieManagementModdablePhysicsRacingRealisticReplay ValueSandboxScienceSimulationSingleplayerStrategy
|
N/A |
10,426 |
9/10 |
~$6 million
|
14
|
Live the life of a wild wolf in a realistic ecological simulation set in Yellowstone National Park.
|
WolfQuest: Anniversary Edition
Steam
Publisher:
eduweb
Developer:
eduweb
|
Jul 22, 2025
1 month, 1 week ago
|
$29.99
|
ActionAction RPGAction-AdventureCo-opEducationExplorationHuntingImmersive SimLife SimMultiplayerNatureOnline Co-OpOpen WorldPvERPGRealisticScienceSimulationSingleplayerSurvival
|
29,004 |
8,406 |
10/10 |
~$4.8 million
|
15
|
The Talos Principle 2 is a thought-provoking first-person puzzle experience that greatly expands on the first game's philosophical themes and stunning environments with increasingly mind-bending challenges.
|
The Talos Principle 2
Steam
Publisher:
Devolver Digital
Developer:
Croteam
|
Nov 2, 2023
1 year, 10 months ago
|
$29.99
|
3D3D PlatformerAction-AdventureExplorationFirst-PersonLinearLogicLore-RichMysteryPhilosophicalPoliticalPost-apocalypticPuzzlePuzzle PlatformerRealisticSci-fiScienceStory RichThird PersonWalking Simulator
|
29,348 |
7,779 |
10/10 |
~$4.5 million
|
16
|
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
|
SpaceEngine
Steam
Publisher:
Cosmographic Software
Developer:
Cosmographic Software
|
Jun 11, 2019
6 years, 2 months ago
Early Access
|
$29.99
|
3DAtmosphericCasualColorfulEarly AccessEducationFlightFuturisticIndieOpen WorldProcedural GenerationRealisticRelaxingSandboxSci-fiScienceSimulationSingleplayerSpaceSpace Sim
|
N/A |
7,521 |
10/10 |
~$4.3 million
|
17
|
Survive your evolution in Neogene Africa starting 10 million years ago. Ancestors: The Humankind Odyssey is a third-person open world survival game where you Explore, Expand, and Evolve to advance your clan to the next generation in the exciting new adventure from Panache Digital Games.
|
Ancestors: The Humankind Odyssey
Steam
Publisher:
Private Division
Developer:
Panache Digital Games
|
Aug 27, 2020
5 years ago
|
$39.99
|
ActionAction-AdventureAdventureAtmosphericChoices MatterCraftingExplorationHistoricalImmersive SimIndieMultiplayerNatureOpen WorldOpen World Survival CraftRPGScienceSimulationSingleplayerSurvivalThird Person
|
88,278 |
4,945 |
9/10 |
~$3.8 million
|
18
|
Build a civilization of real people, working together to advance society and stop a meteor, all without destroying the ecosystem in the process.
|
Eco
Steam
Publisher:
Strange Loop Games
Developer:
Strange Loop Games
|
Feb 6, 2018
7 years, 6 months ago
Early Access
|
$29.99
|
Base BuildingBuildingCraftingEarly AccessEconomyEducationImmersive SimMultiplayerNatureOpen WorldOpen World Survival CraftPolitical SimResource ManagementSandboxScienceSimulationSingleplayerSurvivalTradingTransportation
|
190,801 |
6,335 |
7/10 |
~$3.6 million
|
19
|
Stationeers puts you in control of the construction and management of a space station to run by yourself or online with your friends. Complex atmospheric, electrical, manufacturing, agriculture, and gravitational systems require your thought and management at all times!
|
Stationeers
Steam
Publisher:
RocketWerkz
Developer:
RocketWerkz
|
Dec 12, 2017
7 years, 8 months ago
Early Access
|
$34.99
|
AgricultureAutomationBase BuildingBuildingCo-opColony SimCraftingEarly AccessManagementMarsMiningMultiplayerOpen WorldOpen World Survival CraftPhysicsSandboxSci-fiScienceSpaceSurvival
|
63,605 |
4,393 |
9/10 |
~$2.9 million
|
20
|
Developed by 5pb. and Nitroplus, STEINS;GATE was awarded Famitsu magazine's coveted annual Game of Excellence award and was voted one of the most emotionally charged “tear-inducing games” ever made, in a Famitsu poll. It is a gripping and moving Visual Novel, which has already spawned manga and anime adaptations.
|
STEINS;GATE
Steam
Publisher:
Spike Chunsoft Co., Ltd.
Developer:
MAGES. Inc.
|
Sep 8, 2016
8 years, 11 months ago
|
$29.99
|
AdventureAnimeAtmosphericCasualChoices MatterDating SimGreat SoundtrackHorrorMemesMultiple EndingsMysteryPsychological HorrorRomanceSci-fiScienceSingleplayerStory RichThrillerTime TravelVisual Novel
|
99,778 |
4,669 |
10/10 |
~$2.7 million
|
21
|
Explore an emotional sci-fi game with a unique blend of survival, adventure, and base-building elements. Help Jan Dolski, the sole survivor of an ill-fated space expedition, create alternative versions of himself to escape a hostile planet and tackle personal turmoils with this unconventional crew.
|
The Alters
Steam
Publisher:
11 bit studios
Developer:
11 bit studios
|
Jun 13, 2025
2 months, 3 weeks ago
|
$34.99
|
3DActionAction-AdventureAdventureBase BuildingCraftingExplorationFuturisticManagementPsychologicalResource ManagementSci-fiScienceSingleplayerSpaceStory RichStrategySurvivalThird PersonTime Management
|
94,393 |
3,519 |
9/10 |
~$2.4 million
|
22
|
A first-person survival game set on a post-apocalyptic, ecologically ruined Earth. Play solo or with up to 3 friends as you build, upgrade, and fly a high-tech airship. Scavenge resources, craft tools, and face dangers on the surface as you hunt for a cure to save humanity.
|
Forever Skies
Steam
Publisher:
Far From Home
Developer:
Far From Home
|
Apr 14, 2025
4 months, 3 weeks ago
|
$29.99
$22.49
-25%
|
3DActionAdventureAtmosphericBase BuildingBuildingCo-opCraftingExplorationFirst-PersonFuturisticMultiplayerOpen WorldOpen World Survival CraftPost-apocalypticResource ManagementSci-fiScienceSingleplayerSurvival
|
99,997 |
4,028 |
9/10 |
~$2.3 million
|
23
|
Liftoff® is a drone simulator that translates the rush of first-person view drone flight to the digital world. Join the biggest community for virtual FPV racing and freestyle!
|
Liftoff®: FPV Drone Racing
Steam
Publisher:
LuGus Studios
Developer:
LuGus Studios
|
Sep 13, 2018
6 years, 11 months ago
|
$19.99
|
3DAtmosphericCraftingEarly AccessEducationExplorationFirst-PersonFlightImmersive SimIndieLevel EditorModernMultiplayerParkourRacingRealisticScienceSimulationSingleplayerSports
|
33,315 |
5,880 |
10/10 |
~$2.3 million
|
24
|
STEINS;GATE ELITE follows a rag-tag band of tech-savvy young students who discover the means of changing the past via e-mail using a modified microwave.
|
STEINS;GATE ELITE
Steam
Publisher:
Spike Chunsoft Co., Ltd.
Developer:
MAGES. Inc.
|
Feb 19, 2019
6 years, 6 months ago
|
$59.99
$59.99
-0%
|
AdventureAnimeChoices MatterComedyDramaGoreGreat SoundtrackMultiple EndingsMysteryPsychological HorrorRemakeRomanceSci-fiScienceSingleplayerStory RichThrillerTime TravelViolentVisual Novel
|
19,909 |
1,444 |
9/10 |
~$1.7 million
|
25
|
Captain your own space ship and roam the galaxy in 3D in this tactical space simulator with tons of RPG depth ! Space has never looked so inviting - but images can betray...It has been two years since the end of the second Gemini war, the situation in the wartorn system is further from resolution than ever.
|
Starpoint Gemini 2
Steam
Publisher:
Little Green Men Games
Developer:
Little Green Men Games
|
Sep 26, 2014
10 years, 11 months ago
|
$34.99
|
3DActionAtmosphericDestructionFlightFuturisticIndieModdableOpen WorldRPGSci-fiScienceSimulationSingleplayerSpaceSpace SimSpaceshipsTactical RPGThird PersonTrading
|
51,849 |
2,224 |
7/10 |
~$1.5 million
|
26
|
Take on the role of park manager and design the ultimate zoo for nature's greatest creations.
|
Prehistoric Kingdom
Steam
Publisher:
Crytivo
Developer:
Blue Meridian
|
Apr 27, 2022
3 years, 4 months ago
Early Access
|
$29.99
|
3DAdventureAtmosphericBuildingDinosaursEarly AccessEconomyEducationGod GameGrand StrategyIndieManagementRTSResource ManagementSandboxSci-fiScienceSimulationSingleplayerStrategy
|
70,161 |
2,592 |
9/10 |
~$1.5 million
|
27
|
Rethink human’s dominion in The Invincible: a story-driven adventure set in a hard sci-fi world by Stanisław Lem. Discover planet Regis III as scientist Yasna, use atompunk tools looking for a missing crew and face unforeseen threats. Make choices in a philosophical story that’s driven by science.
|
The Invincible
Steam
Publisher:
11 bit studios
Developer:
Starward Industries
|
Nov 6, 2023
1 year, 10 months ago
|
$29.99
|
AdventureAliensChoices MatterConversationFemale ProtagonistFirst-PersonFuturisticInteractive FictionMultiple EndingsMysteryNarrationNonlinearRobotsSci-fiScienceSingleplayerSpaceStory RichThrillerWalking Simulator
|
61,765 |
2,582 |
9/10 |
~$1.5 million
|
28
|
Make Mars your own! Take control of the world’s most sophisticated AI (AMI) and terraform the surface of the Red Planet for a city-building experience on a planetary scale. Transform this barren world into a lush paradise and explore the surface for any ancient secrets that may be waiting.
|
Per Aspera
Steam
Publisher:
Raw Fury
Developer:
Tlön Industries
|
Dec 3, 2020
4 years, 9 months ago
|
$29.99
$20.99
-30%
|
AutomationBase BuildingBuildingCity BuilderColony SimManagementMarsModdableMultiplayerOnline Co-OpReal-TimeResource ManagementRobotsSandboxSci-fiScienceSimulationSpaceStrategySurvival
|
41,417 |
2,424 |
7/10 |
~$1.4 million
|
29
|
Star Trek: Infinite is a grand strategy experience that lets you play your own Star Trek story as the leader of one of four major factions in the galaxy. Follow the specially crafted story or blaze your own trail in the first Star Trek grand strategy game.
|
Star Trek: Infinite
Steam
Publisher:
Paradox Interactive
Developer:
Nimble Giant Entertainment
|
Oct 12, 2023
1 year, 10 months ago
|
$29.99
|
3D4XChoices MatterDiplomacyExplorationFlightGrand StrategyManagementMilitaryOpen WorldPvEPvPRTSSandboxScienceSimulationSpaceSpace SimStory RichStrategy
|
22,906 |
2,256 |
5/10 |
~$1.3 million
|
30
|
|
OUTBRK
Steam
Publisher:
Sublime
Developer:
Sublime
|
Jun 28, 2024
1 year, 2 months ago
Early Access
|
$34.99
|
3DActionAction-AdventureAdventureAtmosphericCasualDestructionEarly AccessExplorationFirst-PersonImmersive SimIndieMultiplayerNatureOpen WorldRealisticScienceSimulationSingleplayerStrategy
|
18,084 |
1,804 |
7/10 |
~$1.2 million
|