Games like Gamble Tower
Games like Gamble Tower include Slay the Spire, Slay the Spire 2, Balatro, Monster Train, and 9 Kings. We matched them by the tags players give Gamble Tower on Steam (Strategy, Roguelike Deckbuilder, Gambling, Roguelite, and Deckbuilding): closest matches first, and among equally close ones the better-known games.

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

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

Balatro
Shared: Roguelike Deckbuilder · Strategy · Deckbuilding

Monster Train
Shared: Roguelite · Card Battler · Deckbuilding

9 Kings
Shared: Strategy · Roguelike Deckbuilder · Deckbuilding

Super Fantasy Kingdom
Shared: Strategy · Roguelite · Roguelike Deckbuilder

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

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

Dicey Dungeons
Shared: Roguelike Deckbuilder · Roguelite · Deckbuilding

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Roguelite

Griftlands
Shared: Roguelite · Card Battler · Deckbuilding

Breachway
Shared: Strategy · Roguelike Deckbuilder · Deckbuilding

He is Coming
Shared: Strategy · Roguelite · Roguelike Deckbuilder

Roguebook
Shared: Strategy · Deckbuilding · Roguelite

Monster Train 2
Shared: Roguelike Deckbuilder · Strategy · Deckbuilding

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

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

Inscryption
Shared: Card Battler · Deckbuilding · Card Game

RACCOIN: Coin Pusher Roguelike
Shared: Strategy · Roguelike Deckbuilder · Deckbuilding

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

Dungeon Clawler
Shared: Roguelike Deckbuilder · Strategy · Roguelite

Ratropolis
Shared: Strategy · Deckbuilding · Roguelite

LONESTAR
Shared: Strategy · Roguelike Deckbuilder · Card Battler

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