The 6th gen is the 128-bit era, this is the time of the ps2, xbox, game cube and sega dreamcast, there was apperintly another console called the XaviXPort but i never heard of it. This era ended arounf 2005 when the xbox 360 came out.
Rayman games were blatant rip offs of Mario, but if you could look past the wierd graphics and slightly awkward camera the games were a lot of fun :)
also for dreamcast. the 3rd was so awesome. one of the best jump and run