Games like SUM
Games like SUM include OneShot, Martial Law, TBH: Task Bar Hero, Where Winds Meet, and Undertale. We matched them by the tags players give SUM on Steam (Casual, Singleplayer, Trading Card Game, Choices Matter, and Atmospheric): closest matches first, and among equally close ones the better-known games.
OneShot
Shared: Pixel Graphics · Singleplayer · Atmospheric
Martial Law
Shared: Choices Matter · Pixel Graphics · Atmospheric
TBH: Task Bar Hero
Shared: Pixel Graphics · Free to Play · Singleplayer
Where Winds Meet
Shared: Singleplayer · Free to Play · Casual
Undertale
Shared: Choices Matter · Singleplayer · Pixel Graphics
Papers, Please
Shared: Singleplayer · Indie · Pixel Graphics
Unpacking
Shared: Casual · Singleplayer · Pixel Graphics
Emily is Away Too
Shared: Casual · Choices Matter · Indie
Coffee Talk
Shared: Pixel Graphics · Atmospheric · Casual
No, I'm not a Human
Shared: Choices Matter · Singleplayer · Atmospheric
Yes, Your Grace
Shared: Choices Matter · Pixel Graphics · Indie
The Red Strings Club
Shared: Choices Matter · Pixel Graphics · Atmospheric
DAVE THE DIVER
Shared: Casual · Pixel Graphics · Singleplayer
Vampire Survivors
Shared: Singleplayer · Pixel Graphics · Casual
911 Operator
Shared: Singleplayer · Casual · Choices Matter
Balatro
Shared: Singleplayer · Pixel Graphics · Casual
This War of Mine
Shared: Singleplayer · Atmospheric · Choices Matter
Return.
Shared: Casual · Free to Play · Singleplayer
Timberman
Shared: Casual · Singleplayer · Pixel Graphics
Gorogoa
Shared: Singleplayer · Casual · Atmospheric
The Witcher 3: Wild Hunt — Remastered
Shared: Atmospheric · Singleplayer · Choices Matter
Endgame of Devil
Shared: Casual · Singleplayer · Pixel Graphics