Games like Spud Customs
Games like Spud Customs include Undertale, Game Dev Tycoon, DAVE THE DIVER, 911 Operator, and Do Not Feed the Monkeys. We matched them by the tags players give Spud Customs on Steam (Simulation, Choices Matter, Casual, Funny, and Satire): closest matches first, and among equally close ones the better-known games.

Undertale
Shared: Choices Matter · Funny · Story Rich

Game Dev Tycoon
Shared: Simulation · Management · Casual

DAVE THE DIVER
Shared: Casual · Management · Pixel Graphics

911 Operator
Shared: Simulation · Management · Casual

Do Not Feed the Monkeys
Shared: Choices Matter · Management · Dark Humor

Papers, Please
Shared: Simulation · Singleplayer · Pixel Graphics

Banana
Shared: Casual · Singleplayer · Simulation

Emily is Away Too
Shared: Simulation · Choices Matter · Casual

Two Point Hospital
Shared: Simulation · Management · Funny

Cookie Clicker
Shared: Casual · Management · Funny

Yes, Your Grace
Shared: Choices Matter · Pixel Graphics · Casual

Mini Motorways
Shared: Simulation · Casual · Management

Dispatch
Shared: Choices Matter · Story Rich · Singleplayer

The Test
Shared: Simulation · Choices Matter · Story Rich

Good Pizza, Great Pizza - Cooking Simulator Game
Shared: Funny · Simulation · Management

Kindergarten
Shared: Funny · Choices Matter · Pixel Graphics

No Umbrellas Allowed
Shared: Simulation · Choices Matter · Management

Death and Taxes
Shared: Choices Matter · Simulation · Story Rich

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

This Is the Police
Shared: Choices Matter · Management · Simulation

Graveyard Keeper
Shared: Simulation · Management · Pixel Graphics

Little Inferno
Shared: Casual · Funny · Satire

Emily is Away <3
Shared: Simulation · Choices Matter · Casual

Beholder
Shared: Choices Matter · Simulation · Singleplayer