Sega Pluto

(Taken from segaretro.org) The Sega Pluto is an unreleased video game console developed by Sega during the 1990s.

The Sega Pluto would have been a cost-reduced Sega Saturn with a built-in NetLink Internet modem and hard drive, which would have made it one of the first consoles to have Internet support straight out of the box. At least two prototypes were produced (Pluto 01 and Pluto 02, respectively), both presumably in 1996. It is unknown exactly how far the project was carried through before it was cancelled.

Why It Was Cancelled
Unknown.

Result
The console was never released. Both Pluto prototypes have been found, though they lie in the hands of collectors.