There are a few crash games that are hidden by default, you can see them by switching "and" to "or" on the crash series page (so that it looks like this http://prntscr.com/fozq6b).

Full trilogy runs can be found here, along with the sprashfecta stuff http://www.speedrun.com/sprash#Crash

There is a MISC category in N. Sane for the trilogy, but the categories may be moved about once the game is actually out and the mods make a decision. If what you're asking is why aren't there any runs yet, it's because the game isn't even out yet (release date is the 30th).