Games like Geneticognito
Games like Geneticognito include Celeste, SANABI, Super Meat Boy, Hollow Knight: Silksong, and VVVVVV. We matched them by the tags players give Geneticognito on Steam (Stealth, Platformer, Pixel Graphics, Sci-fi, and Female Protagonist): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Pixel Graphics · Platformer · 2D Platformer

SANABI
Shared: Pixel Graphics · 2D Platformer · Singleplayer

Super Meat Boy
Shared: Platformer · Pixel Graphics · 2D Platformer

Hollow Knight: Silksong
Shared: Platformer · Difficult · Singleplayer

VVVVVV
Shared: Pixel Graphics · Platformer · 2D Platformer

Katana ZERO
Shared: Pixel Graphics · Platformer · 2D Platformer

Hollow Knight
Shared: Platformer · Difficult · Singleplayer

Gunpoint
Shared: Stealth · Pixel Graphics · Singleplayer

Mark of the Ninja
Shared: Stealth · Platformer · Singleplayer

Rain World
Shared: Pixel Graphics · Platformer · Difficult

Out There Somewhere
Shared: Platformer · Pixel Graphics · Sci-fi

Pizza Tower
Shared: 2D Platformer · Platformer · Pixel Graphics

LIMBO
Shared: Platformer · Dark · Singleplayer

Skul: The Hero Slayer
Shared: Pixel Graphics · Platformer · Singleplayer

Shovel Knight: Treasure Trove
Shared: Platformer · Pixel Graphics · Singleplayer

A Plague Tale: Innocence
Shared: Stealth · Female Protagonist · Singleplayer

Axiom Verge
Shared: Pixel Graphics · Platformer · Sci-fi

Gravity Circuit
Shared: Platformer · Pixel Graphics · 2D Platformer

DEADBOLT
Shared: Stealth · Pixel Graphics · Singleplayer

MO:Astray
Shared: Pixel Graphics · Platformer · Sci-fi

Little Nightmares
Shared: Singleplayer · Stealth · Dark

Momodora: Reverie Under The Moonlight
Shared: Pixel Graphics · 2D Platformer · Female Protagonist

Portal 2
Shared: Platformer · Singleplayer · Female Protagonist

Jump King
Shared: Pixel Graphics · Platformer · Difficult