Games like Abomi Nation
Games like Abomi Nation include Darkest Dungeon®, Peglin, Crown Trick, Legend Creatures(传奇生物), and Darkest Dungeon® II. We matched them by the tags players give Abomi Nation on Steam (Creature Collector, Roguelite, Exploration, Roguelike, and RPG): closest matches first, and among equally close ones the better-known games.

Darkest Dungeon®
Shared: Turn-Based Combat · Roguelike · RPG

Peglin
Shared: Roguelite · Roguelike · Perma Death

Crown Trick
Shared: Roguelike · Roguelite · RPG

Legend Creatures(传奇生物)
Shared: Exploration · Roguelite · Roguelike

Darkest Dungeon® II
Shared: Roguelite · Roguelike · Perma Death

For The King
Shared: RPG · Roguelike · Turn-Based Combat

Coromon
Shared: Creature Collector · Exploration · Turn-Based Combat

Aethermancer
Shared: Creature Collector · Roguelike · Party-Based RPG

Slay the Spire
Shared: Roguelike · Roguelite · Turn-Based

Bug Fables: The Everlasting Sapling
Shared: Exploration · Party-Based RPG · RPG

Cassette Beasts
Shared: Creature Collector · Turn-Based Combat · Exploration

Stoneshard
Shared: Roguelike · RPG · Procedural Generation

Caves of Qud
Shared: Turn-Based Combat · Procedural Generation · Roguelike

Clair Obscur: Expedition 33
Shared: Turn-Based Combat · RPG · Exploration

9 Kings
Shared: RPG · Roguelike · Roguelite

FTL: Faster Than Light
Shared: Roguelike · Perma Death · Strategy

Mewgenics
Shared: Roguelite · Turn-Based Combat · RPG

Hades
Shared: Roguelite · Roguelike · RPG

For The King II
Shared: RPG · Roguelike · Party-Based RPG

Super Fantasy Kingdom
Shared: Roguelike · Roguelite · RPG

Chrono Ark
Shared: RPG · Roguelite · Party-Based RPG

Iratus: Lord of the Dead
Shared: RPG · Roguelike · Turn-Based Combat

Home Behind 2
Shared: RPG · Roguelike · Roguelite

Slay the Spire 2
Shared: Roguelike · Turn-Based Combat · Roguelite