Games like じゃんつの -Janken Horn-
Games like じゃんつの -Janken Horn- include 100% Orange Juice, Plague Inc: Evolved, Bloons TD 6, Balatro, and Plants vs. Zombies GOTY Edition. We matched them by the tags players give じゃんつの -Janken Horn- on Steam (Casual, Strategy, Card Game, Turn-Based Tactics, and 2D): closest matches first, and among equally close ones the better-known games.

100% Orange Juice
Shared: Strategy · Card Game · Cute

Plague Inc: Evolved
Shared: Strategy · Casual · Indie

Bloons TD 6
Shared: Strategy · Casual · Singleplayer

Balatro
Shared: Card Game · Strategy · Singleplayer

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

ShellShock Live
Shared: Strategy · 2D · Casual

UNO
Shared: Card Game · Casual · Strategy

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

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

Game Dev Tycoon
Shared: Strategy · Casual · Indie

Wingspan
Shared: Card Game · Strategy · Casual

Koi-Koi Japan [Hanafuda playing cards]
Shared: Casual · Card Game · Strategy

Zup! S
Shared: Casual · 2D · Indie

GWENT: The Witcher Card Game
Shared: Strategy · Card Game · PvP

Richman 11
Shared: Casual · Turn-Based Tactics · Strategy

Ballionaire
Shared: Casual · 2D · Strategy

Town of Salem
Shared: Strategy · Casual · Multiplayer

Liars Bar
Shared: Casual · PvP · Multiplayer

Pikuniku
Shared: Casual · Indie · Cute

Texas Hold'em Poker: Pokerist
Shared: Casual · Card Game · PvP

Golf With Your Friends
Shared: Casual · Multiplayer · Indie

Draw & Guess
Shared: Casual · Multiplayer · 2D

Circle Empires
Shared: Strategy · Casual · Indie

The Battle of Polytopia
Shared: Strategy · Turn-Based Tactics · Multiplayer