Games like Mahjong Solitaire
Games like Mahjong Solitaire include Inscryption, UNO, Stacklands, Balatro, and Demonic Mahjong. We matched them by the tags players give Mahjong Solitaire on Steam (Casual, Strategy, Card Game, Point & Click, and Puzzle): closest matches first, and among equally close ones the better-known games.

Inscryption
Shared: Card Game · Card Battler · Puzzle

UNO
Shared: Card Game · Casual · Tabletop

Stacklands
Shared: Card Game · Strategy · Card Battler

Balatro
Shared: Card Game · Strategy · Casual

Demonic Mahjong
Shared: Strategy · Card Game · Casual

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

Slay the Spire
Shared: Card Game · Strategy · Card Battler

Slots & Daggers
Shared: Casual · Strategy · 2D

Slay the Spire 2
Shared: Card Game · Strategy · Card Battler

Clue/Cluedo: Classic Edition
Shared: Strategy · Casual · Tabletop

Animation Throwdown: The Quest for Cards
Shared: Card Game · Strategy · Card Battler

BidKing
Shared: Casual · Strategy · Puzzle

Mini Motorways
Shared: Strategy · Casual · Puzzle

Zup! S
Shared: Casual · Puzzle · 2D

Monument Valley 2
Shared: Casual · Strategy · Puzzle

Machinarium
Shared: Point & Click · Puzzle · Casual

Just Go
Shared: Casual · Strategy · Card Game

Scribblenauts Unlimited
Shared: Casual · Puzzle · 2D

Rento Fortune: Online Dice Board Game (大富翁)
Shared: Casual · Strategy · Tabletop

Peggle Deluxe
Shared: Casual · Puzzle · 2D

Zup!
Shared: Casual · Puzzle · 2D

Zuma Deluxe
Shared: Strategy · Puzzle · Casual

Dorfromantik
Shared: Casual · Puzzle · Strategy

Ratropolis
Shared: Strategy · Card Game · Card Battler