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Best Aliens Games

Top 50 of 203 qualifying games — tagged Aliens (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 South Scrimshaw, Part One (2023) Sci-fi · Linear · Hand-drawn · Free 99.0%1,621 reviews 2 Half-Life: Alyx (2020) VR · FPS · Story Rich · $59.99 + immersive physics-driven environmental interactivity 51+ detailed visuals, environments and lighting 30− stuttering and disruptive loading lag 8 98.3%105,515 reviews 3 420BLAZEIT 2: GAME OF THE YEAR -=Dank Dreams and Goated Memes=- [#wow/11 Like and Subscribe] Poggerz Edition (2024) Satire · Action · FPS · $10.99 + creative level design and shooting 29+ self-aware nostalgic meme humor 12 98.4%1,687 reviews 4 Loddlenaut (2023) Underwater · Relaxing · Open World · $19.99 + addictive cleanup loop 89+ adorable creatures and charming visuals 53− game too short for value 24 98.0%6,307 reviews 5 Half-Life 2 (2004) FPS · Action · Sci-fi · $9.99 + fun physics-driven shooter gameplay 74+ immersive storytelling and memorable characters 36− dated, repetitive, or clunky gameplay 6 97.6%281,021 reviews 6 Angel at Dusk (2024) Action · Bullet Hell · Shooter · $14.99 + dense body-horror visuals 44+ deep bullet-hell systems 37 98.2%1,740 reviews 7 Subnautica (2018) Open World Survival Craft · Survival · Horror · $7.49 + rewarding underwater exploration and base-building 88+ beautiful alien biomes and creatures 22− unclear direction and early confusion 6 97.1%382,144 reviews 8 Half-Life 2: Episode Two (2007) FPS · Action · Sci-fi · $19.99 + fun combat, puzzles, and driving 11+ compelling continuation and richer characters 10− achievement hassles and failed saves 5 97.1%41,174 reviews 9 Is the Vat Utopia or Dystopia? (2026) Visual Novel · Dark Comedy · Dystopian · $2.69 97.9%1,119 reviews 10 Lethal Company (2023) Online Co-Op · Horror · First-Person · $9.99 + fun scavenging horror mechanics 82+ chaotic cooperative play with friends 56− steep punishing learning curve 5 97.0%511,105 reviews 11 Half-Life (1998) FPS · Classic · 1990's · $9.99 + timeless, enjoyable FPS gameplay 90+ immersive environmental storytelling and characters 20− frustrating difficulty and confusing puzzles 17 96.5%165,009 reviews 12 Insaniquarium Deluxe (2006) Casual · Classic · Underwater · $4.99 + simple engaging core gameplay loop 14+ excellent price point value ratio 7− excessive clicking causes hand strain 8 96.8%6,898 reviews 13 The Planet Crafter (2024) Open World Survival Craft · Base-Building · Survival · $23.99 + satisfying terraforming and exploration 69+ rewarding, well-paced world transformation 30− simplistic, repetitive, tedious mechanics 14 96.0%74,276 reviews 14 Bit Blaster XL (2016) Bullet Hell · Shoot 'Em Up · Difficult · $0.99 + simple addictive arcade shooting 29+ extremely cheap for content 17− repetitive limited variety 9 96.3%6,156 reviews 15 The Message from Deep Space (2026) Science · Puzzle · Aliens · $9.99 + Language-decoding puzzles 77+ Moving alien-contact narrative 45− Strict, frustrating solutions 9 96.7%1,957 reviews 16 Abiotic Factor (2025) Survival · Online Co-Op · Open World Survival Craft · $34.99 + rewarding exploration and crafting 69+ vast amount of content 28− GPU spikes and hosting lag 7 95.8%59,389 reviews 17 Half-Life 2: Episode One (2006) FPS · Action · Sci-fi · $19.99 + engaging continuation focused on Alyx 11+ polished gunplay and puzzle mechanics 8− overly short episode 6 95.8%31,276 reviews 18 Defense Grid: The Awakening (2008) Tower Defense · Strategy · Sci-fi · $9.99 + Solid strategic mechanics and balance 57+ Challenging but fair difficulty curve 14− Minor tower balance inconsistencies 6 96.1%5,385 reviews 19 Half-Life: Opposing Force (1999) FPS · Action · Classic · $4.99 + new weapons enemies and mechanics 32+ HECU perspective on Half-Life events 15− abnormal difficulty spikes and tough sections 10 95.3%29,176 reviews 20 RetroMaze (2018) Casual · Indie · Retro · $0.99 + Profile achievement decorations 33+ Fun maze solving 20− Very short maze selection 10 96.1%1,605 reviews 21 Alien Shooter (2009) Shooter · Action · Gore · $4.99 95.5%4,797 reviews 22 Black Mesa (2020) FPS · Remake · Action · $19.99 + modernized combat and level design 40+ stunning modernized graphics and Xen 31− repetitive, clunky extended Xen 9 95.0%144,968 reviews 23 The Riftbreaker: Prologue (2020) Base-Building · Strategy · Hack and Slash · Free + Genre-blending base defense combat 39+ Modern graphics and alien scenery 12− Short single-mission prologue 7 95.4%4,130 reviews 24 Alien Swarm: Reactive Drop (2017) Twin Stick Shooter · PvE · Top-Down Shooter · Free + fun, satisfying tactical shooting 47+ fun, teamwork-focused friend co-op 34 94.9%23,824 reviews 25 100 Aliens Cats (2024) Free to Play · Cats · Hidden Object · Free + simple hidden-object searching 16+ generally easy cat hunting 15− very short completion time 9 95.5%2,157 reviews 26 Alien Swarm (2010) Free to Play · Co-op · Action · Free + fun tactical class-based combat 56+ fun co-op with friends 24− short single campaign 6 94.8%21,648 reviews 27 EARTH DEFENSE FORCE 4.1 The Shadow of New Despair (2016) Action · Third-Person Shooter · Co-op · $19.99 + chaotic arcade fun 65+ excellent co-op splitscreen fun 14− severe difficulty balance issues 6 95.0%10,556 reviews 28 X-COM: UFO Defense (2008) Strategy · Classic · Turn-Based Strategy · $4.99 + deep tactical strategy 22+ repeated play and strategic variety 8− punishing unfair challenge 9 95.0%4,013 reviews 29 Freedom Planet (2014) Platformer · Great Soundtrack · Action · $14.99 95.0%4,912 reviews 30 Vertigo 2 (2023) VR · Indie · Sci-fi · $29.99 + varied weapons and enemy designs 21+ engaging, expansive sci-fi story 14− frustrating, unbalanced boss fights 6 95.1%2,730 reviews 31 Species: Unknown (2025) Early Access · Horror · Online Co-Op · $9.99 + monster-driven mission gameplay 45+ atmospheric spaceship visuals 35− limited maps and content 16 94.4%11,615 reviews 32 1000xRESIST (2024) Female Protagonist · Thriller · Futuristic · $19.99 + emotionally powerful narrative 91+ visually striking artistic direction 26− minimal gameplay, dialogue-driven 36 94.4%7,061 reviews 33 EARTH DEFENSE FORCE 5 (2019) Action · Online Co-Op · Third-Person Shooter · $59.99 + Addictive chaotic gameplay at epic scale 66+ Great cooperative gameplay with friends 15− Janky mechanics with steep solo difficulty 7 94.2%11,548 reviews 34 Dead Space 2 (2011) Horror · Survival Horror · Third-Person Shooter · $19.99 + intense action-horror combat 49+ engaging story and characters 13− modern-system crashes and glitches 10 94.0%30,297 reviews 35 Marvel's Guardians of the Galaxy (2021) Singleplayer · Story Rich · Action · $59.99 + strong character writing and banter 58+ fun team-command combat 34− repetitive shallow combat 22 93.8%45,472 reviews 36 XCOM: Enemy Unknown (2012) Turn-Based Strategy · Tactical · Strategy · $5.99 + rewarding turn-based tactical combat 53+ challenging but fair tactics 9− unfair RNG and poor tutorials 8 93.2%58,826 reviews 37 Alien: Isolation (2014) Horror · Survival Horror · Sci-fi · $39.99 + terrifying adaptive Alien stealth 82+ enduring retro-futurist visual design 34− repetitive and frustrating stealth loops 10 93.1%67,286 reviews 38 Command & Conquer 3: Kane’s Wrath (2009) Family Friendly · Level Editor · Strategy · $19.88 + Engaging mechanics with strategic depth 25+ Well-balanced factions and difficulty options 5− Frequent crashes and stability issues 5 93.4%5,940 reviews 39 Infested Planet (2014) Strategy · Tower Defense · Action · $14.99 + Strategic tactical combat 39+ Escalating, flexible challenge 12− Short campaigns and limited content 7 93.6%3,052 reviews 40 Serious Sam HD: The First Encounter (2009) FPS · Action · Shooter · $14.99 + Fast horde combat with weapon variety 39+ Great remaster with vibrant levels 11− Repetitive gameplay with limited enemy variety 6 93.0%9,067 reviews 41 SPORE (2008) God Game · Open World · Sandbox · $19.99 + creative evolution across varied stages 88− uneven stages and shallow systems 13 92.6%73,065 reviews 42 STASIS: BONE TOTEM (2023) Point & Click · Adventure · Isometric · $19.99 + Compelling underwater horror storytelling 39+ Logical, intuitive, clever puzzles 27− Weak or contrived late plot turns 11 93.3%2,681 reviews 43 Half-Life: Blue Shift (2001) FPS · Action · Sci-fi · $4.99 + Fun action and engaging combat 59+ Compelling narrative from Barney's perspective 26− Derivative with limited new content 23 92.6%21,373 reviews 44 Machinika: Museum (2021) Puzzle · Mystery · Point & Click · $7.99 + Satisfying puzzle discovery and exploration 54+ Well-balanced challenge level 22− Weak or minimal narrative 7 92.7%6,318 reviews 45 Soda Crisis (2022) Side Scroller · Runner · Shoot 'Em Up · $6.59 + fast-paced run-and-gun combat 49+ stylish colorful visuals 26− short overall campaign 16 92.9%3,229 reviews 46 Among Us (2018) Multiplayer · Social Deduction · Online Co-Op · $4.99 + fun social deduction and deception 86+ best enjoyed with friends 30− toxic players, hackers, bots, and leavers 27 92.0%749,030 reviews 47 Halo: The Master Chief Collection (2019) Great Soundtrack · FPS · Classic · $39.99 + fun immersive classic FPS gameplay 16+ mods and replayable campaign variety 13− broken netcode and co-op restrictions 10 92.0%262,912 reviews 48 Destroy All Humans! (2020) Action · Adventure · Villain Protagonist · $29.99 + Chaotic satisfying destruction fun 44+ Modernized fantastic visual polish 14− Unbalanced too hard or easy 6 92.3%11,518 reviews 49 Unnamed Space Idle (2023) Idler · Clicker · Casual · Free + interconnected optimization systems 38+ hundreds of hours content 20− slow grinding progression 13 92.5%4,482 reviews 50 HIVESWAP: ACT 1 (2017) Adventure · Point & Click · Great Soundtrack · $7.99 + strong character writing 18+ enjoyable point-and-click puzzles 8− very short first act 15 92.5%4,054 reviews