Games like Starborne Frontiers
Games like Starborne Frontiers include Destiny 2, Warframe, Marvel Rivals, Albion Online, and Star Trek Online. We matched them by the tags players give Starborne Frontiers on Steam (Free to Play, Auto Battler, Tactical RPG, Creature Collector, and PvE): closest matches first, and among equally close ones the better-known games.

Destiny 2
Shared: Free to Play · PvE · PvP

Warframe
Shared: Free to Play · RPG · PvE

Marvel Rivals
Shared: Free to Play · PvP · RPG

Albion Online
Shared: Free to Play · PvP · RPG

Star Trek Online
Shared: Free to Play · RPG · Space

Arena Breakout: Infinite
Shared: Free to Play · Tactical RPG · PvP

Aniimo
Shared: Creature Collector · Free to Play · RPG

GrandChase
Shared: Free to Play · PvP · PvE

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

Apex Legends™
Shared: Free to Play · PvP · Tactical

Symphony of War: The Nephilim Saga
Shared: Tactical RPG · RPG · Strategy RPG

Firestone – Idle Clicker Online RPG
Shared: Auto Battler · PvE · Strategy RPG

Gladiator Guild Manager
Shared: Auto Battler · Strategy · Tactical RPG

GWENT: The Witcher Card Game
Shared: Free to Play · Strategy · PvP

Game of Thrones Winter is Coming
Shared: Free to Play · Strategy · RPG

Where Winds Meet
Shared: Free to Play · PvP · Strategy

Temtem
Shared: Creature Collector · PvE · PvP

Mechabellum
Shared: Auto Battler · PvP · Strategy

Neverwinter
Shared: Free to Play · RPG · Massively Multiplayer

The Bazaar
Shared: Auto Battler · Strategy · PvP

SMITE®
Shared: Free to Play · Strategy · PvP

The Banner Saga
Shared: Tactical RPG · Strategy RPG · Strategy

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

Guild Wars 2®
Shared: Free to Play · PvP · RPG