Sci-fi games on Steam

Browse and discover some of the best Sci-fi games
This selection of games change every week, so be sure to check them out!

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Half-Life: Source poster image on Steam Backlog
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Half-Life: Source
73 , Mostly Positive
Half-Life 2 poster image on Steam Backlog
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Half-Life 2
96
92
97 , Overwhelmingly Positive
Halo Wars: Definitive Edition poster image on Steam Backlog
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Halo Wars: Definitive Edition
91 , Very Positive
79 , Strong
Halo: Spartan Assault poster image on Steam Backlog
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Halo: Spartan Assault
70
63
80 , Very Positive
60 , Weak
STAR WARS Republic Commando poster image on Steam Backlog
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STAR WARS Republic Commando
78
86
95 , Overwhelmingly Positive
Warhammer 40,000: Dawn of War II: Retribution poster image on Steam Backlog
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Warhammer 40,000: Dawn of War II: Retribution
90 , Very Positive
Aliens vs. Predator poster image on Steam Backlog
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Aliens vs. Predator
68
74
87 , Very Positive
Vanquish poster image on Steam Backlog
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Vanquish
78
88
88 , Very Positive
79 , Strong
Supreme Commander 2 poster image on Steam Backlog
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Supreme Commander 2
77
62
87 , Very Positive
The Swapper poster image on Steam Backlog
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The Swapper
87
86
93 , Very Positive
85 , Mighty
Elite Dangerous poster image on Steam Backlog
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Elite Dangerous
80
67
77 , Mostly Positive
79 , Strong
STAR WARS - Knights of the Old Republic poster image on Steam Backlog
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STAR WARS - Knights of the Old Republic
90 , Very Positive
STAR WARS Jedi Knight - Jedi Academy poster image on Steam Backlog
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STAR WARS Jedi Knight - Jedi Academy
81
86
95 , Overwhelmingly Positive
67 , Fair
Half-Life poster image on Steam Backlog
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Half-Life
96
87
96 , Overwhelmingly Positive
XCOM: Enemy Unknown poster image on Steam Backlog
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XCOM: Enemy Unknown
89
82
94 , Very Positive
Binary Domain poster image on Steam Backlog
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Binary Domain
68
77
85 , Very Positive
Half-Life 2: Update poster image on Steam Backlog
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Half-Life 2: Update
93 , Very Positive
Stellaris poster image on Steam Backlog
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Stellaris
78
80
87 , Very Positive
81 , Strong
Half-Life: Blue Shift poster image on Steam Backlog
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Half-Life: Blue Shift
71
82
90 , Very Positive
QUAKE II poster image on Steam Backlog
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QUAKE II
92 , Very Positive
Black Mesa poster image on Steam Backlog
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Black Mesa
84
89
95 , Overwhelmingly Positive
85 , Mighty
Rebel Galaxy poster image on Steam Backlog
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Rebel Galaxy
85 , Very Positive
74 , Fair
Crysis 2 - Maximum Edition poster image on Steam Backlog
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Crysis 2 - Maximum Edition
85 , Very Positive
Half-Life: Opposing Force poster image on Steam Backlog
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Half-Life: Opposing Force
96
92
95 , Overwhelmingly Positive