Games like Little Army
Games like Little Army include Vampire Survivors, Legend Creatures(传奇生物), Balatro, Slots & Daggers, and RACCOIN: Coin Pusher Roguelike. We matched them by the tags players give Little Army on Steam (Casual, Wargame, Creature Collector, Roguelite, and Real Time Tactics): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Roguelite · Casual · 2D

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

Balatro
Shared: Strategy · Roguelite · Roguelike

Slots & Daggers
Shared: Casual · Strategy · Roguelite

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

Bad North: Jotunn Edition
Shared: Wargame · Real Time Tactics · Auto Battler

Kabuto Park
Shared: Casual · Creature Collector · PvE

Ballionaire
Shared: Casual · Roguelite · Strategy

Kādomon: Hyper Auto Battlers
Shared: Creature Collector · Auto Battler · PvE

How Many Dudes? The Roguelike Autobattler
Shared: Casual · Strategy · Roguelite

MyVoiceZoo
Shared: Casual · Creature Collector · Sandbox

Ultimate Epic Battle Simulator 2
Shared: Wargame · Strategy · Sandbox

Bloons TD 6
Shared: Strategy · Casual · Sandbox

Yokai Art: Night Parade of One Hundred Demons
Shared: Roguelite · Casual · Real Time Tactics

Game Dev Tycoon
Shared: Casual · Strategy · Indie

Bills Must Be Paid
Shared: Roguelite · Strategy · Casual

Yaoling: Mythical Journey
Shared: Creature Collector · Strategy · Sandbox

The Scroll of Taiwu : Beyond The Dome
Shared: Sandbox · Strategy · Casual

Company of Heroes 3
Shared: Wargame · Strategy · Real Time Tactics

Tavern of Gods
Shared: Roguelite · Creature Collector · Strategy

Plants vs. Zombies GOTY Edition
Shared: Casual · Strategy · 2D

Tabletop Tavern
Shared: Wargame · Strategy · Real Time Tactics

Legion Breaker
Shared: Casual · Strategy · Roguelite

9 Kings
Shared: Strategy · Auto Battler · Roguelite