This pretty much adds 2 new cups and a track editor to F-Zero X. The track editor is actually really in depth albeit a bit confusing to learn at first, but you can make some really cool and some really evil things with it. The new cups are brutally difficult, expect crazy jumps, sharp turns, and extremely narrow roads with no railings. The difficulty spike is insane so I'd really only recommend the most learned of F-zero X players try out the new content. I wouldn't say this makes the original game obsolete but the new content is very cool and it sucks we didn't get this on NSO or something