Cave Story+ System Requirements

Minimum:

OS: Windows XP
Processor: Intel Core Solo
Memory: 128 MB RAM
Graphics: 64MB RAM
Hard Drive: 64 MB HD space

Recommended:

OS: Windows 7
Processor: Intel Core Duo 2.0 Ghz and above
Memory: 512 MB RAM
Graphics: 256MB RAM, non-integrated
Hard Drive: 64 MB HD space

The game is also available for Macs and the system requirements for Mac are:

Minimum:

OS: OS X version Leopard 10.5.8, Snow Leopard 10.6.3, or later.
Processor: Intel only, Power PC not supported
Memory: 128 MB RAM
Graphics: 64MB RAM

Recommended:

Processor: Intel Core Duo 2.0 Ghz and above
Memory: 512 MB RAM
Graphics: 256MB RAM