24 games ranked by how much the tags Steam players vote on them overlap with NEODUEL: Backpack Monsters's. A rare tag counts for far more than one that sits on half the store, and popularity never moves a game up.
What they share most: Creature Collector, Party-Based RPG, 1990's, Turn-Based Strategy, Auto Battler, Inventory Management.

1·Nuumonsters
79% match · Creature Collector, Party-Based RPG
61% of 71 reviews positive

2·Backpack Battles
78% match · Auto Battler, Inventory Management
91% of 20,759 reviews positive

3·Tavern of Gods
75% match · Auto Battler, Creature Collector
78% of 814 reviews positive

4·Dungeon Team
75% match · Asynchronous Multiplayer, Auto Battler
79% of 190 reviews positive

5·Despot's Game: Dystopian Battle Simulator
75% match · Auto Battler, Asynchronous Multiplayer
84% of 3,361 reviews positive

6·Astronarch
74% match · Auto Battler, Party-Based RPG
89% of 1,146 reviews positive

7·Digimon World: Next Order
74% match · Creature Collector, Party-Based RPG
81% of 2,997 reviews positive

8·The Last Flame
73% match · Auto Battler, Party-Based RPG
85% of 2,941 reviews positive

9·Antihero
73% match · Asynchronous Multiplayer, Board Game
88% of 836 reviews positive

10·Super Dungeon Tactics
72% match · Board Game, Turn-Based Tactics
78% of 148 reviews positive

11·Legend Creatures(传奇生物)
72% match · Auto Battler, Creature Collector
90% of 3,949 reviews positive

12·Dota Underlords
72% match · Auto Battler, Turn-Based Tactics
82% of 90,943 reviews positive · 1,042 playing

13·Brass: Birmingham
72% match · Board Game, Asynchronous Multiplayer
59% of 661 reviews positive

14·Just King
72% match · Auto Battler, Deckbuilding
89% of 1,492 reviews positive · 2 playing

15·Keep Driving
71% match · Inventory Management, Party-Based RPG
94% of 6,618 reviews positive

16·Time Walker: Dark World
71% match · Auto Battler, Resource Management
86% of 1,510 reviews positive

17·Star Realms
71% match · Deckbuilding, Board Game
87% of 2,244 reviews positive

18·Ascension: Deckbuilding Game
71% match · Asynchronous Multiplayer, Deckbuilding
89% of 1,722 reviews positive

19·Bot Land
71% match · Asynchronous Multiplayer, Auto Battler
66% of 83 reviews positive

20·Kādomon: Hyper Auto Battlers
71% match · Auto Battler, Creature Collector
67% of 614 reviews positive

21·Frozen Synapse Prime
70% match · Asynchronous Multiplayer, Turn-Based Strategy
63% of 338 reviews positive

22·Tower Escape
70% match · Auto Battler, Creature Collector
84% of 416 reviews positive

23·Heroes of Normandie
70% match · Board Game, Asynchronous Multiplayer
73% of 247 reviews positive

24·Evolings
70% match · Creature Collector, Turn-Based Tactics
77% of 459 reviews positive
The closest matches to NEODUEL: Backpack Monsters on Steam are Nuumonsters, Backpack Battles, Tavern of Gods, Dungeon Team, Despot's Game: Dystopian Battle Simulator. They rank highest because their Steam community tags overlap most with NEODUEL: Backpack Monsters's, and shared tags include Creature Collector, Party-Based RPG, 1990's.
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Creature Collector, Party-Based RPG, 1990's count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches NEODUEL: Backpack Monsters's. Popularity never affects the ranking.