Games like Summoner's Gambit
Games like Summoner's Gambit include 9 Kings, Monster Train, Slay the Spire, Slay the Spire 2, and Balatro. We matched them by the tags players give Summoner's Gambit on Steam (Card Battler, Roguelite, Auto Battler, Card Game, and Strategy): closest matches first, and among equally close ones the better-known games.

9 Kings
Shared: Auto Battler · Strategy · Card Game

Monster Train
Shared: Card Battler · Roguelite · Card Game

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

Slay the Spire 2
Shared: Card Game · Card Battler · Strategy

Balatro
Shared: Card Game · Roguelite · Roguelike

Super Fantasy Kingdom
Shared: Auto Battler · Roguelite · Strategy

Inscryption
Shared: Card Battler · Card Game · Roguelite

Griftlands
Shared: Card Battler · Roguelite · Card Game

He is Coming
Shared: Auto Battler · Roguelite · Strategy

Morimens
Shared: Card Battler · Roguelite · PvP

Die in the Dungeon
Shared: Strategy · Card Battler · Card Game

Cross Blitz
Shared: Roguelite · Card Battler · Card Game

Journey to the West
Shared: Card Battler · Roguelite · RPG

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

The Bazaar
Shared: Auto Battler · Card Battler · Strategy

Roguebook
Shared: Card Game · Roguelite · RPG

Loop Hero
Shared: Roguelite · Roguelike · Card Game

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

Gordian Quest
Shared: Card Battler · Card Game · RPG

NEOVERSE
Shared: Card Battler · Roguelite · Card Game

Dicey Dungeons
Shared: Card Battler · Roguelite · Strategy

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

Hadean Tactics
Shared: Card Battler · Auto Battler · Card Game

Stacklands
Shared: Roguelite · Card Battler · Card Game