Games like S.E.X. Project: Simulated Emotional Xenotech
Games like S.E.X. Project: Simulated Emotional Xenotech include Detroit: Become Human, LoveChoice, Love Is All Around, Road 96, and The Invincible. We matched them by the tags players give S.E.X. Project: Simulated Emotional Xenotech on Steam (Choices Matter, Dating Sim, Story Rich, Adventure, and Dialogue Heavy): closest matches first, and among equally close ones the better-known games.

Detroit: Become Human
Shared: Choices Matter · Story Rich · Multiple Endings

LoveChoice
Shared: Dating Sim · Choices Matter · Story Rich

Love Is All Around
Shared: Dating Sim · Choices Matter · Multiple Endings

Road 96
Shared: Choices Matter · Adventure · Story Rich

The Invincible
Shared: Adventure · Choices Matter · Dialogue Heavy

Baldur's Gate 3
Shared: Choices Matter · Story Rich · Adventure

Senren * Banka
Shared: Dating Sim · Adventure · Story Rich

The Witcher 3: Wild Hunt — Remastered
Shared: Story Rich · Adventure · Choices Matter

Knowledge, or know Lady
Shared: Dating Sim · Choices Matter · Romance

Emily is Away <3
Shared: Choices Matter · Dating Sim · Multiple Endings

The Three Kingdoms: Rebirth
Shared: Dating Sim · Choices Matter · Multiple Endings

The Wolf Among Us
Shared: Story Rich · Adventure · Choices Matter

Life is Strange: True Colors
Shared: Choices Matter · Story Rich · Multiple Endings

ATRI -My Dear Moments-
Shared: Story Rich · Dating Sim · Romance

I Wani Hug that Gator!
Shared: Story Rich · Choices Matter · Dating Sim

Slay the Princess — The Pristine Cut
Shared: Choices Matter · Story Rich · Romance

Undertale
Shared: Choices Matter · Story Rich · Multiple Endings

STAR WARS™ Knights of the Old Republic™ II - The Sith Lords™
Shared: Story Rich · Choices Matter · Adventure

STEINS;GATE
Shared: Story Rich · Choices Matter · Multiple Endings

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Story Rich · Multiple Endings · Dating Sim

Terminator: Resistance
Shared: Choices Matter · Story Rich · Sci-fi

Otaku's Adventure
Shared: Dating Sim · Multiple Endings · Adventure

The Forgotten City
Shared: Adventure · Choices Matter · Story Rich

Mass Effect™ Legendary Edition
Shared: Choices Matter · Story Rich · Sci-fi