Games like Sudoku RPG
Games like Sudoku RPG include Undertale, OneShot, Turnip Boy Commits Tax Evasion, Unpacking, and Little Witch in the Woods. We matched them by the tags players give Sudoku RPG on Steam (Puzzle, Immersive Sim, Replay Value, Time Management, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Undertale
Shared: Pixel Graphics · RPG · Funny

OneShot
Shared: Pixel Graphics · Puzzle · Cute

Turnip Boy Commits Tax Evasion
Shared: Puzzle · RPG · Funny

Unpacking
Shared: Puzzle · Relaxing · Pixel Graphics

Little Witch in the Woods
Shared: Pixel Graphics · Puzzle · RPG

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

Stardew Valley
Shared: Pixel Graphics · RPG · Relaxing

DAVE THE DIVER
Shared: Pixel Graphics · Relaxing · RPG

Carto
Shared: Puzzle · Relaxing · Cute

Touhou Mystia's Izakaya
Shared: Pixel Graphics · Time Management · RPG

Zuma Deluxe
Shared: Puzzle · 2D · Arcade

Big Walk
Shared: Puzzle · Relaxing · Immersive Sim

FEZ
Shared: Puzzle · Pixel Graphics · Indie

Fields of Mistria
Shared: Pixel Graphics · RPG · Relaxing

Cat Goes Fishing
Shared: 2D · Funny · Puzzle

Is This Seat Taken?
Shared: Puzzle · Relaxing · Cute

Zup! S
Shared: Puzzle · 2D · Relaxing

DELTARUNE
Shared: Pixel Graphics · RPG · Funny

Ib
Shared: Pixel Graphics · Puzzle · 2D

Punch Club
Shared: Time Management · Pixel Graphics · RPG

Webbed
Shared: Pixel Graphics · 2D · Cute

To the Moon
Shared: Pixel Graphics · RPG · Indie

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

ANIMAL WELL
Shared: Puzzle · Pixel Graphics · 2D