Games like S
Games like S include Vampire Survivors, Cookie Clicker, Papers, Please, Undertale, and Banana. We matched them by the tags players give S on Steam (2D, Casual, Pixel Graphics, 1990's, and Economy): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Pixel Graphics · 2D · Casual

Cookie Clicker
Shared: Casual · Pixel Graphics · Economy

Papers, Please
Shared: Pixel Graphics · Indie · Singleplayer

Undertale
Shared: Pixel Graphics · Multiple Endings · 2D

Banana
Shared: 2D · Casual · Singleplayer

Timberman
Shared: Casual · Pixel Graphics · 2D

Game Dev Tycoon
Shared: Casual · 2D · Indie

Please, Don’t Touch Anything
Shared: Pixel Graphics · Casual · Indie

OneShot
Shared: Pixel Graphics · Indie · Singleplayer

KinitoPET
Shared: 2D · Indie · Multiple Endings

DAVE THE DIVER
Shared: Pixel Graphics · Casual · Singleplayer

Touhou Mystia's Izakaya
Shared: Casual · Pixel Graphics · 2D

Reventure
Shared: Pixel Graphics · 2D · Multiple Endings

Five Nights at Freddy's: Into the Pit
Shared: Pixel Graphics · 2D · Singleplayer

There Is No Game: Wrong Dimension
Shared: Pixel Graphics · Indie · Casual

Skul: The Hero Slayer
Shared: Pixel Graphics · 2D · Indie

The Binding of Isaac: Rebirth
Shared: Pixel Graphics · Indie · 2D

Baba Is You
Shared: Pixel Graphics · Indie · 2D

Milk outside a bag of milk outside a bag of milk
Shared: Pixel Graphics · 2D · Multiple Endings

Keep Driving
Shared: Pixel Graphics · Indie · 2D

Turbo Pug
Shared: Casual · Pixel Graphics · 2D

Slots & Daggers
Shared: Casual · 1990's · 2D

Rhythm Doctor
Shared: Pixel Graphics · 2D · Singleplayer

Coloring Game
Shared: Pixel Graphics · Casual · 2D