Games like Automon Arena
Games like Automon Arena include Mewgenics, Monster Train, Despot's Game: Dystopian Battle Simulator, 9 Kings, and Into the Breach. We matched them by the tags players give Automon Arena on Steam (Auto Battler, Roguelite, Turn-Based Tactics, Strategy, and Turn-Based Strategy): closest matches first, and among equally close ones the better-known games.

Mewgenics
Shared: Roguelite · Turn-Based Tactics · Turn-Based Strategy

Monster Train
Shared: Roguelite · Turn-Based Tactics · PvP

Despot's Game: Dystopian Battle Simulator
Shared: Auto Battler · Turn-Based Tactics · Roguelike

9 Kings
Shared: Auto Battler · Strategy · Roguelike

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

The Dungeon Beneath
Shared: Auto Battler · Roguelite · Turn-Based Tactics

Your Only Move Is HUSTLE
Shared: Turn-Based Strategy · Strategy · Turn-Based Tactics

Backpack Battles
Shared: Auto Battler · PvP · Strategy

Legend Creatures(传奇生物)
Shared: Roguelite · Auto Battler · Strategy

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

Meme Mayhem
Shared: Auto Battler · Roguelite · Roguelike

He is Coming
Shared: Auto Battler · Strategy · Roguelite

Luck be a Landlord
Shared: Roguelite · Strategy · Roguelike

Peglin
Shared: Roguelite · Roguelike · Strategy

Brutal Orchestra
Shared: Roguelite · Strategy · Turn-Based Tactics

Darkest Dungeon® II
Shared: Roguelite · Turn-Based Tactics · Roguelike

Monster Battles
Shared: Auto Battler · Turn-Based Tactics · Strategy

Legends of Kingdom Rush
Shared: Turn-Based Tactics · Roguelite · Turn-Based Strategy

The Last Flame
Shared: Auto Battler · Strategy · Roguelike

Hero's Hour
Shared: Auto Battler · Strategy · Turn-Based Strategy

Super Fantasy Kingdom
Shared: Auto Battler · Strategy · Roguelite

Time Walker: Dark World
Shared: Auto Battler · Roguelite · Turn-Based Strategy

Alpha League
Shared: Auto Battler · Roguelite · Turn-Based Tactics

Oaken Tower
Shared: Auto Battler · Strategy · PvP