Saber Rider team just released the demo for Saber Rider and the Star Sheriffs.
It's already making a lot of buzz in the media. The demo features the first stage only but even though it's based on the alpha version, it's already very polished.
The demo is available for PC (Windows, Mac OS, Linux) and Dreamcast. To download the demo, please go to the demo page: http://callxyz.com/demo-version and choose your platform.