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Games like Not Involved: Vermillion
If you finished Not Involved: Vermillion, the closest matches are Star Citizen, Hollow Knight: Silksong, Clair Obscur: Expedition 33, Replaced and Hytale. All 36 share its adventure genre and are ranked by how closely their themes and modes overlap.
Star Citizen
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Hollow Knight: Silksong
87
Clair Obscur: Expedition 33
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Replaced
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Hytale
85
Dispatch
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Valheim
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Hades II
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Cairn
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Mouse: P.I. For Hire
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Mina the Hollower
74
No Man's Sky
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Mixtape
91
Blue Prince
91
Mewgenics
90
Big Walk
70
Palworld
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Sword of the Sea
79
Routine
86
Ninja Gaiden: Ragebound
90
The Midnight Walk
90
Absolum
84
Denshattack!
93
Neva
93
Rhythm Doctor
84
Marvel Cosmic Invasion
86
Peak
88
Well Dweller
90
Silver Pines
88
Esoteric Ebb
82
Darwin's Paradox!
85
Mio: Memories in Orbit
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Zero Parades: For Dead Spies
77
Lost Soul Aside
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Tenebris Somnia
84