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Best Space Sim Games

Top 50 of 108 qualifying games — tagged Space Sim (community voting), 1,000+ reviews · ranked by Wilson lower bound on Steam review score · review data as of 2026-10-22. Under each game: what its Steam reviewers most often mention (+ praise, − complaint), with how many of about 100 most-helpful reviews raise it — from the review consensus on each game's page.

1 Fractal Block World (2021) Exploration · Open World · FPS · $6.99 + Nested exploration and shrinking 55+ Nearly endless exploration content 13− Mazes, repetition, and convoluted navigation 11 98.3%1,613 reviews 2 Dyson Sphere Program (2021) Automation · Space · Base-Building · $19.99 + addictive interstellar factory automation 83+ hundreds of hours of content 10− steep, poorly explained learning curve 10 97.4%91,825 reviews 3 Oxygen Not Included (2019) Colony Sim · Base-Building · Survival · $24.99 + deep interlocking colony systems 79+ rewarding steep learning curve 34− overwhelming complexity requiring tutorials 16 96.7%144,000 reviews 4 Spaceflight Simulator (2022) Sandbox · Space Sim · Space · $9.89 + Fun, creative, engaging sandbox building 95+ Easy to learn, hard to master 32− Price too high or expensive 5 96.8%9,808 reviews 5 Universe Sandbox (2015) Sandbox · Space · Simulation · $29.99 + fun realistic space sandbox 91+ impressive graphics and visual detail 6− lag and heavy hardware demands 12 96.5%32,545 reviews 6 Reentry - A Space Flight Simulator (2025) Early Access · Space · Simulation · $34.99 + Detailed spaceflight simulation 72+ Steep but satisfying learning curve 19− Demanding PC performance 9 97.0%1,372 reviews 7 SpaceEngine (2019) Early Access · Open World · Casual · $20.99 + Engaging space exploration and discovery 77+ Stunning visuals and incredible graphics detail 24− Failed to meet expectations or deliver 7 96.2%16,905 reviews 8 Kerbal Space Program (2015) Space · Simulation · Sandbox · $9.99 + fun deep rocket-building sandbox 91+ mods and enduring sandbox variety 17− steep confusing learning curve 17 95.6%148,061 reviews 9 FTL: Faster Than Light (2012) Rogue-like · Space · Strategy · $9.99 + deep strategic ship management 82+ varied addictive repeated runs 40− punishing luck-driven difficulty 21 95.1%79,038 reviews 10 Mars First Logistics (2025) Early Access · Stylized · Mars · $19.99 + Creative vehicle problem solving 79+ Challenging creative engineering tasks 23− Repetitive delivery missions 12 94.9%3,795 reviews 11 Cosmoteer: Starship Architect & Commander (2022) Sci-fi · Singleplayer · 2D · $19.99 + Complex ship building with satisfying combat 82+ Challenging but rewarding learning curve 10− Unbalanced AI and repetitive design requirements 13 94.2%12,914 reviews 12 Dune: Imperium (2024) Board Game · Strategy · Deckbuilding · $14.94 + Strong board-game adaptation 84+ Challenging competent AI 24− Online play limitations 7 94.0%4,414 reviews 13 Approximately Up (2026) Adventure · Space Sim · Sandbox · $24.99 + Engineering-focused ship building 62+ Challenging but achievable missions 14− Missing features and repetitive missions 12 94.4%1,182 reviews 14 Sins of a Solar Empire: Rebellion (2012) Management · Diplomacy · Online Co-Op · $19.99 + Real-time strategy with tactical depth 61+ Dedicated modding community with quality mods 15 93.2%16,367 reviews 15 3030 Deathwar Redux - A Space Odyssey (2017) Adventure · Indie · Space · $14.99 93.8%1,168 reviews 16 Endless Sky (2015) Space · Free to Play · Open World · Free + Addictive, varied, and freeform gameplay 68+ Immersive writing and engaging narratives 19− Excessive pirates and unfair combat 11 92.3%7,111 reviews 17 ΔV: Rings of Saturn (2023) Space · Sci-fi · Physics · $9.99 + Deep physics mining simulation 81+ Meaningful ship upgrades 18− Too difficult to understand 9 92.5%3,474 reviews 18 Starcom: Unknown Space (2024) Space · Exploration · Open World · $24.99 + Exploration, combat, shipbuilding 64+ Strong Star Trek-inspired storytelling 33− Repetitive, shallow, or tedious systems 12 92.3%4,500 reviews 19 Rodina (2014) Space · Exploration · Open World · $14.99 92.9%1,335 reviews 20 Solar 2 (2011) Space · Indie · Casual · $9.99 + Cosmic growth sandbox 31+ Optional achievement challenges 8− Tedious, unfair challenges 7 90.9%2,236 reviews 21 Avorion (2020) Exploration · Sandbox · Space Sim · $24.99 + Ship building, creativity, versatile playstyles 90+ Fast advancement without excessive grinding 9− Shallow simulation, tedious grinding, poor balance 23 90.0%14,587 reviews 22 Starcom: Nexus (2019) Space · Sci-fi · RPG · $19.99 + Exploration, combat, and shipbuilding 39+ Engaging mysteries and alien narratives 16− Shallow combat and linear exploration 6 90.4%2,322 reviews 23 Exo One (2021) Atmospheric · Exploration · Space · $16.99 + Relaxing, satisfying momentum-based experience 73+ Stunning visuals and art direction 43− Very short playtime 14 89.9%5,288 reviews 24 PULSAR: Lost Colony (2021) Space Sim · Open World · Simulation · $19.99 + engaging crew-based ship mechanics 44+ best with coordinated player crew 32− weak enemy variety and pathfinding 9 89.8%5,743 reviews 25 Hardspace: Shipbreaker (2022) Space · Sci-fi · Simulation · $34.99 + therapeutic ship dismantling loop 79+ engaging workers-rights campaign 25− unskippable heavy-handed dialogue 22 89.3%22,436 reviews 26 Farlands (2024) Farming Sim · Building · Early Access · $17.99 + space farming and exploration 50+ charming colorful pixel art 26− limited content and short campaigns 25 89.9%1,751 reviews 27 House of the Dying Sun (2016) Action · Simulation · Indie · $19.99 + Tight tactical space combat 45+ Crisp immersive sound design 13− Short campaign and missions 26 89.5%2,059 reviews 28 Juno: New Origins (2023) Building · Science · Space Sim · $19.99 + realistic physics and customization 70+ runs well on weak hardware 9− steep learning curve 14 89.1%3,553 reviews 29 Astrometica: Prologue (2024) Base-Building · Space Sim · Survival · Free 89.6%1,308 reviews 30 The Orville - Interactive Fan Experience (2019) Sandbox · Space · Sci-fi · Free 89.8%1,049 reviews 31 60 Parsecs! (2018) Turn-Based Strategy · Text-Based · Funny · $9.99 + resource management and choices 22+ funny writing and crew characters 16− opaque systems and random deaths 7 88.8%4,108 reviews 32 Deliver Us The Moon (2019) Adventure · Indie · Action · $24.99 + emotionally engaging narrative 63+ satisfying puzzle-solving mechanics 45− dated mechanics and excessive hand-holding 11 88.2%9,581 reviews 33 Beam Eye Tracker (2023) Simulation · Utilities · Video Production · $29.99 + Smooth, accurate tracking 54+ Affordable webcam-based alternative 23− Jittery or imprecise tracking 18 88.6%1,045 reviews 34 Blossom: The Seed of Life (2026) Open World Survival Craft · Co-op · Mars · $16.99 + Relaxing terraforming mechanics 33+ Satisfying technology unlocks 17− Shallow resource-gathering loop 17 88.1%1,151 reviews 35 Voyager-19 (2024) Horror · Space · Sci-fi · $3.99 + Fun cosmic horror gameplay 23+ Atmospheric retro cosmic presentation 14− Tedious power management and chores 11 87.9%1,023 reviews 36 Void Crew (2024) Co-op · Multiplayer · Space Sim · $24.99 + chaotic fun and engaging mechanics 63+ fun with coordinated crew teamwork 54− repetitive missions and limited variety 11 86.3%8,472 reviews 37 Solar Expanse - Space Exploration Manager (2026) Early Access · Space · Simulation · $14.39 + Deep logistics and terraforming 43+ Frequent updates and responsive developers 26− Excessive clicks and menu navigation 30 87.3%1,410 reviews 38 No Man's Sky (2016) Open World · Open World Survival Craft · Space · $59.99 + expansive, relaxing space exploration 52+ years of substantial free updates 29− shallow, repetitive core systems 18 85.3%423,486 reviews 39 Space Haven (2020) Base-Building · Space · Colony Sim · $24.99 + freedom in ship building 75+ active developer support 13− confusing unintuitive interface 17 85.8%11,152 reviews 40 Stardeus (2022) Early Access · Exploration · Colony Sim · $29.99 + deep automation and colony systems 25+ active responsive developer 15− shallow repetitive gameplay loops 17 86.7%1,562 reviews 41 Rebel Galaxy (2015) Space · Open World · Sci-fi · $19.99 + Naval broadside combat and progression 62+ Excellent soundtrack with strong atmosphere 16− Repetitive gameplay and limited tactics 11 85.0%8,405 reviews 42 X3: Terran Conflict (2008) Space · Simulation · Sandbox · $15.99 + Deep sandbox economy and combat 35+ Hundreds of hours of content 12− Steep learning curve 11 85.5%2,876 reviews 43 Space industrial empire (2024) Automation · Space · Indie · $5.99 85.7%1,044 reviews 44 Mars Horizon (2020) Management · Space · Strategy · $19.99 + space agency management systems 31+ worth buying on sale 8− repetitive mission minigames 29 84.1%3,098 reviews 45 Tin Can (2022) Simulation · Space · Survival · $19.99 84.4%1,362 reviews 46 Star Traders: Frontiers (2018) Sci-fi · Moddable · Simulation · $14.99 + deep flexible sandbox career systems 39+ years of free ongoing updates 18− steep learning curve lacking tutorials 12 83.4%3,824 reviews 47 Astrox Imperium (2019) Space · Simulation · Indie · $14.99 + Deep sandbox mechanics 32+ Offline freedom from toxicity 16− Abandoned or stalled development 20 83.9%1,261 reviews 48 Lightracer Spark (2023) RPG · Sci-fi · Space · $9.09 + Strong sci-fi storytelling 30+ Choices and strategy blend 14− Awkward or amateurish writing 16 83.8%1,018 reviews 49 Starship EVO (2020) Action · Indie · Simulation · $24.99 + Flexible ship building 71+ Active solo developer 18− Frequent crashes and glitches 28 83.2%1,546 reviews 50 Redout 2 (2022) Racing · Flight · PvP · $19.99 + Fast, intense anti-gravity racing 53+ Flashy, colorful futuristic tracks 18− Overcomplicated racing mechanics 14 83.1%1,504 reviews