Planet Alpha

Windows - Minimum:

Requires a 64-bit processor and operating system
OS: Windows 7 64-bit
Processor: Intel Core i5-2550K (3.4 GHz) / AMD FX-4350 (4.2 GHz)
Memory: 4 GB RAM
Graphics: GeForce GTX 660 (2GB) / AMD Radeon HD 7850 (2 GB)
Storage: 5000 MB available space

Windows - Recommended:

Requires a 64-bit processor and operating system
OS: Windows 10 64-bit
Processor: Intel Core i5-4570 (3.20 GHz) / AMD FX-9590 (4.70 GHz)
Memory: 8 GB RAM
Graphics: GeForce GTX 960 (2GB) / Radeon R9 380X (4 GB)
Storage: 5000 MB available space

To activate the Steam key you've received, follow the instructions below;

1. First up, open the Steam client. (If you don't have it, simply click the "Install Steam" button here => Steam Store )
2. Sign in to your Steam account. (If you don't have one, click here to create a new one => Steam Account)
3. Click on the "ADD A GAME" button in the bottom corner of the client.
4. Then, select "Activate a product on Steam..."
5. Write down or copy-paste the activation key that you've received from %s in the window.
6. Your game is now visible in your library! Click on your "Library".
7. And finally, click on the game and select "Install" to start your download.