Games like Sweep
Games like Sweep include Slay the Spire, Balatro, Slay the Spire 2, 9 Kings, and Dicey Dungeons. We matched them by the tags players give Sweep on Steam (Roguelike, Strategy, Card Battler, Deckbuilding, and Roguelite): closest matches first, and among equally close ones the better-known games.

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

Balatro
Shared: Roguelike · Card Game · Deckbuilding

Slay the Spire 2
Shared: Roguelike · Deckbuilding · Strategy

9 Kings
Shared: Strategy · Roguelike · Deckbuilding

Dicey Dungeons
Shared: Card Battler · Roguelike · Deckbuilding

Monster Train
Shared: Card Battler · Roguelite · Roguelike

Dungeons & Degenerate Gamblers
Shared: Roguelike · Strategy · Roguelike Deckbuilder

Inscryption
Shared: Card Battler · Deckbuilding · Card Game

Wildfrost
Shared: Card Battler · Card Game · Roguelike Deckbuilder

Griftlands
Shared: Card Battler · Deckbuilding · Roguelite

Die in the Dungeon
Shared: Roguelike · Strategy · Deckbuilding

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Card Battler · Roguelike · Deckbuilding

Super Fantasy Kingdom
Shared: Strategy · Roguelike · Roguelite

DICEOMANCER
Shared: Strategy · Card Battler · Card Game

Roguebook
Shared: Deckbuilding · Strategy · Card Game

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

Overdungeon
Shared: Strategy · Card Battler · Roguelike Deckbuilder

Breachway
Shared: Roguelike · Strategy · Deckbuilding

Yao-Guai Hunter
Shared: Roguelike · Card Battler · Card Game

Across the Obelisk
Shared: Roguelike · Card Game · Roguelike Deckbuilder

Ratropolis
Shared: Card Battler · Deckbuilding · Strategy

He is Coming
Shared: Roguelike · Strategy · Roguelite

My Card Is Better Than Your Card!
Shared: Roguelike · Deckbuilding · Strategy

Touhou: Lost Branch of Legend
Shared: Strategy · Roguelike · Card Battler