Games like Robot Island
Games like Robot Island include Lucy -The Eternity She Wished For-, Detroit: Become Human, FTL: Faster Than Light, Outer Wilds, and OPUS: Echo of Starsong - Full Bloom Edition. We matched them by the tags players give Robot Island on Steam (Indie, Robots, Visual Novel, Sci-fi, and Story Rich): closest matches first, and among equally close ones the better-known games.
Lucy -The Eternity She Wished For-
Shared: Visual Novel · Story Rich · Robots
Detroit: Become Human
Shared: Story Rich · Robots · Singleplayer
FTL: Faster Than Light
Shared: Indie · Sci-fi · Space
Outer Wilds
Shared: Space · Story Rich · Indie
OPUS: Echo of Starsong - Full Bloom Edition
Shared: Visual Novel · Story Rich · Indie
Starfield
Shared: Space · Sci-fi · Singleplayer
The Talos Principle
Shared: Sci-fi · Story Rich · Robots
Deliver Us The Moon
Shared: Indie · Sci-fi · Space
Mass Effect™ Legendary Edition
Shared: Story Rich · Sci-fi · Space
STEINS;GATE
Shared: Visual Novel · Story Rich · Sci-fi
The Invincible
Shared: Robots · Sci-fi · Space
Observation
Shared: Indie · Sci-fi · Space
Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Indie · Singleplayer
Deliver Us Mars
Shared: Sci-fi · Story Rich · Singleplayer
Analogue: A Hate Story
Shared: Indie · Visual Novel · Sci-fi
GNOSIA
Shared: Visual Novel · Story Rich · Sci-fi
Prey
Shared: Sci-fi · Space · Singleplayer
The Turing Test
Shared: Sci-fi · Space · Singleplayer
PRAGMATA
Shared: Sci-fi · Robots · Singleplayer
Milk outside a bag of milk outside a bag of milk
Shared: Visual Novel · Indie · Story Rich
OPUS: Rocket of Whispers
Shared: Indie · Visual Novel · Story Rich
Transistor
Shared: Indie · Story Rich · Sci-fi
The Uncertain: Last Quiet Day
Shared: Indie · Robots · Sci-fi