Operating System: Ubuntu 12.04 LTS (or similar, Debian-based distro)
Processor (CPU): x86/x86_64-compatible, 2.0GHz or better processor
Memory (RAM): 2GB System RAM
Hard Disk Space: 1.7GB free space (subject to change)
Video Card: OpenGL 2.0 compatible 3D graphics card* with at least 256 MB of addressable memory (ATI Radeon x1600 or NVIDIA equivalent)
Internet: A broadband internet connection (for Steam download and online multiplayer) - Online multiplayer requires a free Runic Account
*See Valve's steam-for-linux github readme for further information about Linux video driver support