Games like Dungeon Defenders II
Games like Dungeon Defenders II include Dungeon Defenders, Bloons TD 6, Dungeon Defenders: Awakened, The Riftbreaker, and MONSTER HUNTER RISE. We matched them by the tags players give Dungeon Defenders II on Steam (Multiplayer, Online Co-Op, Co-op Campaign, Tower Defense, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Dungeon Defenders
Shared: Multiplayer · Online Co-Op · Tower Defense

Bloons TD 6
Shared: Multiplayer · Tower Defense · Online Co-Op

Dungeon Defenders: Awakened
Shared: Multiplayer · Online Co-Op · Singleplayer

The Riftbreaker
Shared: Online Co-Op · Multiplayer · Tower Defense

MONSTER HUNTER RISE
Shared: Online Co-Op · Multiplayer · Singleplayer

PUBG: BATTLEGROUNDS
Shared: Multiplayer · Survival · Online Co-Op

Enshrouded
Shared: Multiplayer · Online Co-Op · Survival

Monster Hunter Wilds
Shared: Multiplayer · Online Co-Op · Action

ELDEN RING
Shared: Multiplayer · Action RPG · Online Co-Op

Valheim
Shared: Online Co-Op · Multiplayer · Survival

ELDEN RING NIGHTREIGN
Shared: Online Co-Op · Multiplayer · Singleplayer

Path of Exile
Shared: Multiplayer · Action RPG · Online Co-Op

Where Winds Meet
Shared: Multiplayer · Singleplayer · Action RPG

Orcs Must Die! 2
Shared: Tower Defense · Online Co-Op · Multiplayer

7 Days to Die
Shared: Multiplayer · Survival · Online Co-Op

Monster Hunter: World
Shared: Multiplayer · Third Person · Character Customization

Borderlands 3
Shared: Multiplayer · Online Co-Op · Co-op Campaign

The First Descendant
Shared: Multiplayer · Online Co-Op · Singleplayer

Raft
Shared: Multiplayer · Survival · Online Co-Op

Night of the Dead
Shared: Multiplayer · Tower Defense · Online Co-Op

Diablo® IV
Shared: Online Co-Op · Multiplayer · Action RPG

Dead by Daylight
Shared: Multiplayer · Online Co-Op · Survival

Warframe
Shared: Action RPG · Online Co-Op · Third Person

Trailmakers
Shared: Co-op Campaign · Online Co-Op · Singleplayer