Games like Cardpocalypse
Games like Cardpocalypse include Inscryption, Slay the Spire, Library Of Ruina, Griftlands, and Undertale. We matched them by the tags players give Cardpocalypse on Steam (Card Battler, Card Game, Story Rich, Family Friendly, and Funny): closest matches first, and among equally close ones the better-known games.

Inscryption
Shared: Card Battler · Card Game · Story Rich

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

Library Of Ruina
Shared: Card Game · Story Rich · Card Battler

Griftlands
Shared: Card Battler · Card Game · Story Rich

Undertale
Shared: Story Rich · Funny · RPG

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

Carto
Shared: Cute · Story Rich · Hand-drawn

Yu-Gi-Oh! Master Duel
Shared: Card Game · Card Battler · Trading Card Game

Card City Nights
Shared: Card Battler · Card Game · Trading Card Game

Shadowverse: Worlds Beyond
Shared: Card Battler · Trading Card Game · Card Game

Black Book
Shared: Card Battler · Card Game · Female Protagonist

UNO
Shared: Card Game · Family Friendly · Funny

Stacklands
Shared: Card Game · Card Battler · Cute

DELTARUNE
Shared: Story Rich · Funny · RPG

Dicey Dungeons
Shared: Card Battler · Card Game · Indie

WitchSpring R
Shared: Funny · Cute · Story Rich

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

GWENT: The Witcher Card Game
Shared: Card Game · Trading Card Game · Card Battler

Sultan's Game
Shared: Story Rich · Card Game · RPG

Infinity Wars: Animated Trading Card Game
Shared: Card Game · Card Battler · Trading Card Game

Donut County
Shared: Funny · Cute · Family Friendly

Before Your Eyes
Shared: Story Rich · Cartoony · Narrative

Tinykin
Shared: Family Friendly · Cartoony · Cute

Tainted Grail: Conquest
Shared: Card Game · Story Rich · Deckbuilding