Games like Last Shinobi
Games like Last Shinobi include Slay the Spire 2, Monster Train, Inscryption, Slay the Spire, and Balatro. We matched them by the tags players give Last Shinobi on Steam (Deckbuilding, Card Battler, Turn-Based Tactics, Strategy, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

Slay the Spire 2
Shared: Deckbuilding · Roguelike · Strategy

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

Inscryption
Shared: Card Battler · Deckbuilding · Card Game

Slay the Spire
Shared: Card Battler · Deckbuilding · Roguelike

Balatro
Shared: Deckbuilding · Roguelike · Strategy

Wildfrost
Shared: Card Battler · Turn-Based Tactics · Deckbuilding

天外武林 (Traveler of Wuxia)
Shared: Deckbuilding · Roguelike · Card Battler

9 Kings
Shared: Strategy · Deckbuilding · Roguelike

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

LONESTAR
Shared: Turn-Based Tactics · Card Battler · Strategy

Griftlands
Shared: Card Battler · Deckbuilding · Strategy

Die in the Dungeon
Shared: Deckbuilding · Strategy · Roguelike

Dream of Corpse Lady
Shared: Card Battler · Strategy · Turn-Based Tactics

Into the Breach
Shared: Strategy · Turn-Based Tactics · Roguelike

Fights in Tight Spaces
Shared: Deckbuilding · Strategy · Turn-Based Tactics

As We Descend
Shared: Card Battler · Deckbuilding · Turn-Based Tactics

StarVaders
Shared: Deckbuilding · Turn-Based Tactics · Roguelike

Roguebook
Shared: Deckbuilding · Strategy · Card Game

Dicey Dungeons
Shared: Card Battler · Deckbuilding · Roguelike

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

Marvels Midnight Suns Digital Edition
Shared: Deckbuilding · Turn-Based Tactics · Turn-Based Strategy

Ratropolis
Shared: Deckbuilding · Card Battler · Strategy

Super Fantasy Kingdom
Shared: Strategy · Roguelike · Deckbuilding

Dungeons & Degenerate Gamblers
Shared: Deckbuilding · Strategy · Card Battler