For any problems related to purchasing the game on the front page of this website or the Humble Store, please email the Humble Store for support.

All technical support is done through the Steam forums, to ensure that players can share resolutions to any issues they’ve found. Please visit the forums and search for existing solutions. If none are found, start a new thread with as much information about the issue as you can provide.

The Steam forums require a free Steam account.

System Requirements

PC Minimum

Windows XP SP2 or higher
Processor: 1.8 GHz
Memory: 2 GB RAM
Graphics: 256 MB VRAM video card
Hard Drive: 800 MB available space

PC Recommended

Windows 7
Processor: 2 GHz
Memory: 4 GB RAM
Graphics: 512 MB VRAM video card

Mac Minimum

OS X Lion (10.7) or higher
Processor: 1.8 GHz
Memory: 2 GB RAM
Graphics: 256 MB VRAM video card
Hard Drive: 800 MB available space

Mac Recommended

OS X Mountain Lion (10.8)
Processor: 2 GHz
Memory: 4 GB RAM
Graphics: 512 MB VRAM video card

Linux Minimum

Processor: 1.8 GHz
Memory: 2 GB RAM
Graphics: 256 MB VRAM video card
Hard Drive: 800 MB available space
Note: Built with Unity 4.3.4, tested in Ubuntu 12.04 and 13.10

Linux Recommended

Processor: 2 GHz
Memory: 4 GB RAM
Graphics: 512 MB VRAM video card