Steam Playtests
Starsunder

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Starsunder playtest

by Starsunder Studio

Master momentum in a top-down spaceship shooter. Battle in seven arenas, race for your personal best, or descend into generated caves in a solo campaign. Choose your ship and pilot, use offensive and defensive skills, and decide when to return with your salvage.

Anyone with a Steam account can join, and it's free.

Access
Instant
On playtest since
Oct 31, 2026
Planned release
Coming soon
Developer
Starsunder Studio
Platforms
Windows
Players
Co-op, Multiplayer, Online co-op, Online PvP, PvP, Single-player
Languages
English

How to join the Starsunder playtest

  1. Open the game's Steam page with the Join playtest button. Sign in to Steam if it asks.
  2. Use the Starsunder playtest signup there. You're in straight away, with nothing to pay.
  3. The playtest shows up in your Steam library, ready to install and play.

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How AI is used

Starsunder includes pre-generated AI-assisted artwork and audio, including spaceship and environment art, pilot portraits, music, sound effects and voice lines. Some written content and promotional artwork were also developed with AI assistance. This content is created during development. The game does not generate AI content or connect to generative AI services during gameplay.

The developer's own words, from Steam.

About Starsunder

Every turn carries momentum

Thrust, drift, brake and line up your next shot. Starsunder is a 2D top-down spaceship shooter where positioning matters as much as firepower. Choose a ship and pilot whose handling, bonuses and special abilities suit the way you fly.

Dive into The Descent

Take on a solo campaign of generated caves. Follow clear objectives, fight through enemy formations and guardians, then reach the dock to extract. Spend banked salvage on upgrades, push deeper for another haul, or surface to secure what you have earned. A lost dive costs the salvage you have not banked, so knowing when to leave is part of the challenge.

Find your fight

Play against bots or join casual online matches for two to eight players. Seven arenas bring different challenges, from close-quarters labyrinth battles to boss assaults, planetary defence and racing. Race cleanly to build speed, and chase your personal best and local ghost. Climb the PlayFab ladder or enter free casual tournament brackets.

Know your kit

Each playable ship pairs an offensive skill with a defensive skill. Browse the in-game Skills guide for effects and damage values, then combine your ship with a pilot's stat bonuses. Play with keyboard controls or a compatible gamepad.

Before you fly

- The solo campaign and personal race records are saved locally on your device.

- Online play requires an internet connection and a Starsunder account through PlayFab.

- PlayFab rankings and casual tournament brackets use client-reported match results.

- Tournaments have no entry fee; played tournaments award the configured XP/Flux prizes.

- Completed regular matches against opponents award XP and Flux; unranked matches earn half rewards.

- Steam achievements and Steam Cloud are not included.

From the game's Steam page.