I agree to Matthew, it is impossible to break this record without any mods.
And now proof this one.
nyan.cat was available at end of 2010, at a subdomain, which rates were transfered to the (today) official nyan.cat website, so it was possible to get a result of 18796000 seconds - But okay, I can't proof, what I say. So, I nyan again for 200 hours. See you back at 16th November ;)
.. found it out. I did'nt rate the games in a scale of 1 to 10. Sorry. Created a new caterogy for non-list ;)
Argh, sorry. Don't saw the text from you: "If you're able to set the record and not read off a list, we'll evolve the rules and add that requirement." - But why my attempt was denied then? I followed the rules and I was at 23 video games.