Games like Project Amalthea: Battlegrounds
Games like Project Amalthea: Battlegrounds include Warframe, Marvel Rivals, Star Trek Online, Delta Force, and SMITE®. We matched them by the tags players give Project Amalthea: Battlegrounds on Steam (Massively Multiplayer, Free to Play, Indie, Action, and RPG): closest matches first, and among equally close ones the better-known games.

Warframe
Shared: Free to Play · Action · Massively Multiplayer

Marvel Rivals
Shared: Free to Play · Multiplayer · Action

Star Trek Online
Shared: Free to Play · Massively Multiplayer · Space

Delta Force
Shared: Free to Play · Massively Multiplayer · Multiplayer

SMITE®
Shared: Free to Play · Action · Multiplayer

Neverwinter
Shared: Free to Play · Massively Multiplayer · RPG

Destiny 2
Shared: Free to Play · Multiplayer · Massively Multiplayer

War Thunder
Shared: Free to Play · Action · Massively Multiplayer

Paladins®
Shared: Free to Play · Action · Multiplayer

Apex Legends™
Shared: Free to Play · Multiplayer · Action

Once Human
Shared: Free to Play · Action · Multiplayer

Path of Exile
Shared: Free to Play · RPG · Multiplayer

Albion Online
Shared: Free to Play · Massively Multiplayer · RPG

Where Winds Meet
Shared: Free to Play · Multiplayer · Massively Multiplayer

Halo Infinite
Shared: Free to Play · Action · Multiplayer

World of Warships
Shared: Free to Play · Multiplayer · PvP

NARAKA: BLADEPOINT
Shared: Action · Massively Multiplayer · PvP

Century: Age of Ashes
Shared: Free to Play · Action · Indie

The First Descendant
Shared: Free to Play · RPG · Action

KurtzPel
Shared: Free to Play · Action · Massively Multiplayer

PUBG: BATTLEGROUNDS
Shared: Action · PvP · Multiplayer

Last Oasis
Shared: Massively Multiplayer · Action · RPG

Mecha BREAK
Shared: Free to Play · Action · PvP

FragPunk
Shared: Free to Play · Action · Multiplayer