FREE: PixelJunk™ Monsters Ultimate (Steam Key)

WINDOWS
Minimum:
OS: Windows XP (Service Pack 2)
Processor: 1.5Gz Dual Core Processor
Memory: 2 GB RAM
Graphics: DirectX 9.0c Shader Model 3 Compliant Graphics Device
DirectX: Version 9.0c
Hard Drive: 600 MB available space
Sound Card: XAudio 2-Compatible Sound Card

Recommended:
OS: Windows 7
Processor: 2.2Gz Dual Core Processor
Memory: 4 GB RAM
Graphics: DirectX 9.0c Shader Model 3 Dedicated Graphics Device
DirectX: Version 9.0c
Hard Drive: 600 MB available space
Sound Card: XAudio 2-Compatible Sound Card

LINUX
Minimum:
OS: Ubuntu 12.04 (if using Ubuntu)
Processor: 1.5Gz Dual Core Processor
Memory: 2 GB RAM
Graphics: OpenGL 2 with Framebuffer support
Hard Drive: 650 MB available space
Additional Notes: Glibc version 2.15

Recommended:
OS: Ubuntu 13.04 (if using Ubuntu)
Processor: 2.2Gz Dual Core Processor
Memory: 4 GB RAM
Graphics: OpenGL 2 with Framebuffer support
Hard Drive: 650 MB available space
Additional Notes: Glibc version 2.15

MAC OS X
Minimum:
OS: OS X 10.6 (Snow Leopard)
Processor: 1.5Gz Dual Core Processor
Memory: 2 GB RAM
Graphics: Intel HD Graphics 3000 256MB or better
Hard Drive: 650 MB available space

Recommended:
OS: OS X 10.8 (Mountain Lion)
Processor: 2.2Gz Dual Core Processor
Memory: 4 GB RAM
Graphics: Intel HD Graphics 3000 256MB or better
Hard Drive: 650 MB available space

http://store.steampowered.com/app/243780/