Games like Checkmate Challenge
Games like Checkmate Challenge include Kingdom Rush - Tower Defense, Nubby's Number Factory, Plants vs. Zombies GOTY Edition, Plague Inc: Evolved, and Gambonanza. We matched them by the tags players give Checkmate Challenge on Steam (Chess, Arcade, Strategy, 2D, and Singleplayer): closest matches first, and among equally close ones the better-known games.

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

Nubby's Number Factory
Shared: Strategy · Arcade · Singleplayer

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

Plague Inc: Evolved
Shared: Strategy · Singleplayer · Tactical

Gambonanza
Shared: Chess · Arcade · Singleplayer

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

XCOM 2
Shared: Strategy · Tactical · Singleplayer

Door Kickers
Shared: Strategy · Tactical · Singleplayer

Peggle Deluxe
Shared: Arcade · Singleplayer · 2D

The Last Spell
Shared: Strategy · Singleplayer · Tactical

Bloons TD 6
Shared: Strategy · Singleplayer · 2D

Shotgun King: The Final Checkmate
Shared: Chess · Strategy · Arcade

Zuma Deluxe
Shared: Arcade · 2D · Strategy

Sid Meier’s Civilization® VI
Shared: Strategy · Singleplayer · Tactical

XCOM: Enemy Unknown
Shared: Strategy · Tactical · Singleplayer

Company of Heroes 2
Shared: Strategy · Tactical · Singleplayer

Shadow Tactics: Blades of the Shogun
Shared: Strategy · Tactical · Singleplayer

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

FTL: Faster Than Light
Shared: Strategy · Singleplayer · Tactical

The WereCleaner
Shared: Strategy · Arcade · Singleplayer

911 Operator
Shared: Strategy · Singleplayer · Tactical

Age of Empires II (Retired)
Shared: Strategy · Singleplayer · Tactical

Hearts of Iron IV
Shared: Strategy · Tactical · Singleplayer

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