Game overview
ProtoGalaxy
Earth is under siege! A mysterious and powerful alien race has come to enslave the entire galaxy, and your fleet is humanity's last hope. You must put an end to the attacks and rebuild a home for the survivors.
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- Steam reviews
- 61.5% positive 65 reviews · via SteamSpy
Delayed observation · last tracked . Values marked unavailable are not estimated.
About this game Read the full description
Earth is under siege!
A mysterious and powerful alien race has come to enslave the entire galaxy, and your fleet is humanity's last hope. You must put an end to the attacks and rebuild a home for the survivors. With the invaders in hot pursuit, and the dangers of the unexplored at every turn, do you have what it takes to forge a new galaxy?
Proto Defense is the first online multiplayer co-op turret defense game for ProtoGalaxy. Team up with your friends to defend Earth from alien invaders in this unique turret defense experience.
A mysterious and powerful alien race has come to enslave the entire galaxy, and your fleet is humanity's last hope. You must put an end to the attacks and rebuild a home for the survivors. With the invaders in hot pursuit, and the dangers of the unexplored at every turn, do you have what it takes to forge a new galaxy?
Key features:
- Team up with up to 4 players and explore the galaxy.
- Enjoy challenging action, smart puzzles, and deep adventure.
- Customize your ship with a huge selection of parts.
- Use physics to solve puzzles or defeat your enemies.
- Create your own galaxy using the built in editor.
- Download new galaxies from other players for endless gameplay.
Proto Defense DLC
Source Studio is pleased to announce it's first Arcade map: Proto Defense!Proto Defense is the first online multiplayer co-op turret defense game for ProtoGalaxy. Team up with your friends to defend Earth from alien invaders in this unique turret defense experience.
Key features:
- Team up to defend Earth from alien invaders.
- Pick from a big selection of turrets.
- Reposition your turrets at any time to deal extra damage.
- Take down huge bosses.
- Compete in leaderboards for the highest score.
- Tackle 8 new challenging achievements.
- Built using the ProtoGalaxy Editor.M
Media gallery 9 screenshots · 0 videos
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Latest news
All news on Steam ↗System requirements Windows
Windows
Minimum
- OS *: Windows XP SP3/Vista/7
- Processor: 2GHz or equivalent processor
- Memory: 1GB
- Graphics: 256MB video ram or better (GeForce 7 series or higher/Radeon X600 series or higher)
- DirectX®: 9.0c
- Hard Drive: 1GB
- Sound: Windows compatible sound card
Game details Languages, features & support
- Publisher
- Source Studio Ltd.
- Achievements
- 33
- Controller support
- partial
- Features
- Single-player, Multi-player, Co-op, Shared/Split Screen, Steam Achievements, Partial Controller Support, Remote Play Together, Family Sharing
- Languages
- English
- Website
- Official website ↗
Compatibility & accessibility Steam Deck, controllers & access features
Can I Play This?
Steam declarations and Valve's Steam Deck compatibility result. Missing data is shown as unknown, never unsupported.
Native Steam builds
Windows: unknown
macOS: unknown
Linux: unknown
Steam Deck
unknown
Valve compatibility test
Input
Controller support: unknown
Structured language support (1)
| Language | Interface | Full audio | Subtitles |
|---|---|---|---|
| English | Yes | No | No |
Steam store page
fresh · checked 2026-10-03
PCGamingWiki technical notes
External link only; SteamIQHQ does not ingest PCGamingWiki content.
More analysis Activity patterns, updates & developer tools
Genre Benchmarks
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Developer Analytics
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Frequently Asked Questions
Is ProtoGalaxy free to play?
Yes, ProtoGalaxy is free to play on Steam.
What genre is ProtoGalaxy?
ProtoGalaxy is a Action, Indie game.
Who developed ProtoGalaxy?
ProtoGalaxy was developed by Source Studio Ltd. and published by Source Studio Ltd..
What platforms does ProtoGalaxy support?
Available on Steam for Windows.
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