Games like Tetra Tactics
Games like Tetra Tactics include Slay the Spire, Balatro, Slay the Spire 2, Wildfrost, and Dicey Dungeons. We matched them by the tags players give Tetra Tactics on Steam (Roguelike Deckbuilder, Card Battler, Roguelike, Turn-Based Tactics, and Deckbuilding): closest matches first, and among equally close ones the better-known games.

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

Balatro
Shared: Roguelike Deckbuilder · Roguelike · Deckbuilding

Slay the Spire 2
Shared: Roguelike · Roguelike Deckbuilder · Deckbuilding

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Turn-Based Tactics

Dicey Dungeons
Shared: Roguelike Deckbuilder · Card Battler · Roguelike

Monster Train
Shared: Card Battler · Turn-Based Tactics · Deckbuilding

9 Kings
Shared: Roguelike · Roguelike Deckbuilder · Deckbuilding

Gordian Quest
Shared: Card Battler · Card Game · Roguelike Deckbuilder

Monster Train 2
Shared: Roguelike Deckbuilder · Roguelike · Deckbuilding

LONESTAR
Shared: Roguelike · Card Battler · Roguelike Deckbuilder

Across the Obelisk
Shared: Roguelike Deckbuilder · Tactical · Roguelike

Super Fantasy Kingdom
Shared: Roguelike · Roguelike Deckbuilder · Strategy

Dungeons & Degenerate Gamblers
Shared: Roguelike Deckbuilder · Roguelike · Card Battler

Die in the Dungeon
Shared: Roguelike · Roguelike Deckbuilder · Deckbuilding

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

Dice & Fold
Shared: Card Battler · Roguelike Deckbuilder · Roguelike

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

Inscryption
Shared: Card Battler · Deckbuilding · Card Game

StarVaders
Shared: Roguelike Deckbuilder · Turn-Based Tactics · Deckbuilding

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

Commander Quest
Shared: Roguelike Deckbuilder · Roguelike · Deckbuilding

Dota Underlords
Shared: Strategy · Turn-Based Tactics · Tactical

Backpack Battles
Shared: Roguelike Deckbuilder · Roguelike · Strategy

Black Jacket
Shared: Roguelike Deckbuilder · Roguelike · Deckbuilding