If you liked this
Games like Rubber Duck Frontier
If you finished Rubber Duck Frontier, the closest matches are Star Citizen, Clair Obscur: Expedition 33, Hytale, Valheim and Hades II. All 36 share its adventure genre and are ranked by how closely their themes and modes overlap.
Star Citizen
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Clair Obscur: Expedition 33
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Hytale
90
Valheim
93
Hades II
91
Mina the Hollower
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Mewgenics
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Palworld
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Well Dweller
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Absolum
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Esoteric Ebb
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Zero Parades: For Dead Spies
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Lost Soul Aside
92
Abiotic Factor
90
Welcome to Elderfield
84
Realm of Ink
89
Tunic
80
Pathologic 3
84
Tainted Grail: The Fall of Avalon
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Regions of Ruin: Runegate
90
Ender Magnolia: Bloom in the Mist
86
Off
89
Nighthawks
85
Lost in Random: The Eternal Die
94
Caves of Qud
93
Cult of the Lamb: Woolhaven
85
Starsand Island
95
Slay the Princess: The Pristine Cut
95
Cat Quest III
89
UFO 50
80
Crimson Moon
89
Sea of Stars
84
Under the Island
87
Promise Mascot Agency
80
Strange Antiquities
90