How to Download Orbital Siege

1. Click on the Orbital Siege download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• Requires a 64-bit processor and operating system
  
• OS: Windows 10
  
• Processor: Any CPU
  
• Memory: 256 MB RAM
  
• Graphics: 512 MB and Vulkan support
  
• Storage: 256 MB available space

Recommended:

• Requires a 64-bit processor and operating system

Linux Requirements

Minimum:

Recommended:

Mac Requirements

Minimum:

Recommended:

A solo indie-developed pixelated 2D arcade space shoot-'em-up that captures the nostalgia and high-octane fun of beloved 80s and 90s arcade experiences.

The skies are ablaze.
An alien fleet pierces the atmosphere, its warships blotting out the sun. Cities crumble, defenses fall, and the planet teeters on the brink of annihilation.

You are humanity’s last line of defense. One pilot. One ship. One chance to turn the tide.

Orbital Siege fuses the classic arcade shooters with planetary defense, delivering relentless action.

Key Features

🔥 Intense Shoot-'em-up Action: Survive 50 escalating enemy waves and take down 10 bosses.

⚙️ Upgrade & Defend: Boost firepower, speed, and shields with power-ups. Block enemy fire with 3 defensive orbs, hunt foes with 4 homing missiles, and activate 5 planetary turrets.

🎯 Dodge & Weave: Slip through storms of enemy fire with sharp precision.

🎨 Pixel-Perfect Retro Style: Vibrant pixel art that celebrates the golden age of arcade gaming.

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