Games like I'm from area 51
Games like I'm from area 51 include Kindergarten 2, Granny: Chapter Two, Lucius, The Stanley Parable, and Gunpoint. We matched them by the tags players give I'm from area 51 on Steam (Indie, Gore, Stealth, Comedy, and Adventure): closest matches first, and among equally close ones the better-known games.

Kindergarten 2
Shared: Gore · Indie · Adventure

Granny: Chapter Two
Shared: Indie · Gore · Adventure

Lucius
Shared: Gore · Adventure · Indie

The Stanley Parable
Shared: Indie · Comedy · Adventure

Gunpoint
Shared: Indie · Stealth · Comedy

Aragami
Shared: Stealth · Indie · Adventure

There Is No Game: Wrong Dimension
Shared: Indie · Adventure · Comedy

Mark of the Ninja: Remastered
Shared: Stealth · Indie · Gore

CARRION
Shared: Gore · Indie · Adventure

Serious Sam 4
Shared: Gore · Adventure · Comedy

Reventure
Shared: Indie · Adventure · Comedy

Jazzpunk: Director's Cut
Shared: Indie · Comedy · Adventure

NOT A HERO
Shared: Indie · Comedy · Gore

Serial Cleaner
Shared: Indie · Stealth · Gore

Party Hard
Shared: Stealth · Indie · Gore

Outlast
Shared: Gore · Adventure · Stealth

POSTAL 4: No Regerts
Shared: Gore · Adventure · Comedy

Mark of the Ninja
Shared: Stealth · Indie · Adventure

My Friend Pedro
Shared: Indie · Gore · Comedy

PEAK
Shared: Adventure · Comedy · Indie

Deponia
Shared: Comedy · Adventure · Indie

Serious Sam 3: BFE
Shared: Gore · Comedy · Indie

Viscera Cleanup Detail: Santa's Rampage
Shared: Gore · Indie · Comedy

Amnesia: The Dark Descent
Shared: Gore · Indie · Adventure