Games like Sudoku Dungeon
Games like Sudoku Dungeon include Kingdom Rush - Tower Defense, XCOM 2, Kingdom Rush 5: Alliance TD, Plants vs. Zombies GOTY Edition, and Kingdom Rush Frontiers - Tower Defense. We matched them by the tags players give Sudoku Dungeon on Steam (Strategy, Puzzle, Turn-Based Tactics, 2D, and Logic): closest matches first, and among equally close ones the better-known games.

Kingdom Rush - Tower Defense
Shared: Strategy · 2D · Singleplayer

XCOM 2
Shared: Strategy · Turn-Based Tactics · Tactical

Kingdom Rush 5: Alliance TD
Shared: Strategy · 2D · Singleplayer

Plants vs. Zombies GOTY Edition
Shared: Strategy · Singleplayer · 2D

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · 2D · Singleplayer

Baba Is You
Shared: Puzzle · Logic · Singleplayer

Hexcells
Shared: Puzzle · Strategy · Logic

Into the Breach
Shared: Strategy · Turn-Based Tactics · Puzzle

Zup! S
Shared: Puzzle · 2D · Singleplayer

The Last Spell
Shared: Strategy · Turn-Based Tactics · Singleplayer

GemCraft - Chasing Shadows
Shared: Strategy · Singleplayer · 2D

STAR WARS Zero Company™
Shared: Turn-Based Tactics · Strategy · Singleplayer

Tactical Breach Wizards
Shared: Puzzle · Turn-Based Tactics · Singleplayer

Patrick's Parabox
Shared: Puzzle · Logic · 2D

Mini Metro
Shared: Strategy · Puzzle · Singleplayer

Gunpoint
Shared: Puzzle · 2D · Strategy

Dragon Age™: The Veilguard
Shared: Strategy · Singleplayer · Fantasy

Hexcells Infinite
Shared: Puzzle · Logic · Strategy

The Escapists
Shared: Strategy · 2D · Singleplayer

Kingdom Rush Origins - Tower Defense
Shared: Strategy · 2D · Singleplayer

SteamWorld Heist II
Shared: Turn-Based Tactics · Singleplayer · Strategy

Reus
Shared: Strategy · Puzzle · Singleplayer

Fell Seal: Arbiter's Mark
Shared: Strategy · Turn-Based Tactics · Fantasy

Hexcells Plus
Shared: Puzzle · Strategy · Logic