The hardest game ever? How about beat Wings of Vi on Demon difficulty with Doomed + Hellspawn modifiers? Wings of Vi hardest that i know and I think it's humanly impossible (with these difficulty settings).

About 99Floors, run with glitches is a legit run and this is not the hardest game ever.

How long will you verify my full run Warcraft III: The Frozen Throne all 4 campaigns Hard Difficulty? I submited it a month ago. I did not play for speed (24h 04m), but I was the first who submited single-segment run all 4 campaigns.