Games like Tower Tactics II
Games like Tower Tactics II include Balatro, Slay the Spire, Slay the Spire 2, Tower Tactics: Liberation, and FTL: Faster Than Light. We matched them by the tags players give Tower Tactics II on Steam (Tower Defense, Roguelike Deckbuilder, Strategy, Space, and Roguelike): closest matches first, and among equally close ones the better-known games.

Balatro
Shared: Roguelike Deckbuilder · Roguelike · Strategy

Slay the Spire
Shared: Roguelike Deckbuilder · Roguelike · Strategy

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

Tower Tactics: Liberation
Shared: Tower Defense · Roguelike Deckbuilder · Roguelike

FTL: Faster Than Light
Shared: Strategy · Space · Roguelike

9 Kings
Shared: Strategy · Roguelike · Roguelike Deckbuilder

Heretic's Fork
Shared: Tower Defense · Strategy · Roguelike Deckbuilder

Dicey Dungeons
Shared: Roguelike Deckbuilder · Deckbuilding · Roguelike

Luck be a Landlord
Shared: Roguelike Deckbuilder · Strategy · Deckbuilding

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

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

Loop Hero
Shared: Roguelike · Deckbuilding · Roguelite

Inscryption
Shared: Deckbuilding · Card Battler · Roguelike

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

Monster Train
Shared: Roguelite · Deckbuilding · Roguelike

Vault of the Void
Shared: Roguelike Deckbuilder · Strategy · Deckbuilding

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

Emberward
Shared: Tower Defense · Strategy · Deckbuilding

Super Fantasy Kingdom
Shared: Strategy · Roguelike · Roguelike Deckbuilder

Ratropolis
Shared: Strategy · Deckbuilding · 2D

Cubic Cosmos
Shared: Roguelike Deckbuilder · Deckbuilding · Tower Defense

Cobalt Core
Shared: Roguelike Deckbuilder · Strategy · Roguelike

Combolands: Roguelike Citybuilder
Shared: Strategy · Roguelike Deckbuilder · Roguelike

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Deckbuilding