If you liked this
Games like Behind the Horizon: The Sky Fortress
If you finished Behind the Horizon: The Sky Fortress, the closest matches are Star Citizen, Hytale, Mewgenics, Fields of Mistria and Abiotic Factor. All 36 share its indie genre and are ranked by how closely their themes and modes overlap.
Star Citizen
80
Hytale
91
Mewgenics
89
Fields of Mistria
92
Abiotic Factor
90
Welcome to Elderfield
80
Pathologic 3
90
Thank You For Your Application
89
Nighthawks
94
Caves of Qud
93
Cult of the Lamb: Woolhaven
94
Discounty
85
Starsand Island
95
Slay the Princess: The Pristine Cut
80
Tiny Bookshop
86
Everything Is Crab
87
Promise Mascot Agency
76
Restaurats
80
Strange Antiquities
90
Keep Driving
86
Core Keeper
86
Dredge
87
The Jackbox Party Pack 11
85
Back to the Dawn
85
Dead In Antares
89
Cult of the Lamb
81
Shadows of Doubt
Free
87
Palia
79
Asdivine Knot
82
Ruffy and the Riverside
91
Stardew Valley
76
Labyrinth of the Demon King
84
My Time at Sandrock
90
Techno Banter
90
Cabernet
78