Games like Seal the Rift
Games like Seal the Rift include Slay the Spire, Balatro, Slay the Spire 2, Monster Train, and 9 Kings. We matched them by the tags players give Seal the Rift on Steam (Strategy, Difficult, Card Game, Roguelike, and Turn-Based Strategy): closest matches first, and among equally close ones the better-known games.

Slay the Spire
Shared: Card Game · Roguelike · Strategy

Balatro
Shared: Card Game · Roguelike · Strategy

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

Monster Train
Shared: Card Game · Card Battler · Roguelite

9 Kings
Shared: Strategy · Roguelike · Card Game

Wildfrost
Shared: Card Game · Difficult · Card Battler

Super Fantasy Kingdom
Shared: Strategy · Roguelike · Card Game

Die in the Dungeon
Shared: Strategy · Roguelike · Card Game

Dungeons & Degenerate Gamblers
Shared: Strategy · Roguelike · Card Game

Griftlands
Shared: Card Battler · Roguelite · Card Game

Astrea: Six-Sided Oracles
Shared: Card Game · Strategy · Roguelike

Breachway
Shared: Strategy · Card Game · Roguelike

Inscryption
Shared: Card Game · Card Battler · Roguelike

Across the Obelisk
Shared: Turn-Based Strategy · Card Game · Roguelike

Dicey Dungeons
Shared: Card Battler · Roguelike · Strategy

Roguebook
Shared: Card Game · Strategy · RPG

Ratropolis
Shared: Strategy · Card Battler · Card Game

He is Coming
Shared: Strategy · Roguelike · Card Game

Vault of the Void
Shared: Strategy · Card Game · Card Battler

Library Of Ruina
Shared: Difficult · Card Game · Strategy

LONESTAR
Shared: Strategy · Roguelike · Card Battler

As We Descend
Shared: Card Game · Roguelike · Card Battler

RACCOIN: Coin Pusher Roguelike
Shared: Strategy · Roguelike · Turn-Based Strategy

StarVaders
Shared: Difficult · Card Game · Roguelite