They were eagerly waiting to see if the Chiefs would keep their perfect record and break the Guinness World Record for the loudest NFL stadium.
We caught up with a few fans, before the game ended, to see what setting a new record would mean to them.
"I think it'd be great for them to have the Guinness record. My son is down there, I bought him tickets to this game, and he's participating. I'd be proud that he's a Guinness World Book of Records person," said Pat Casey.
"I'm loving this 5-0 record. We're hoping for 6-0 today. I think I could be the loudest one in here today," said Kylee Sherman.
The Kansas City Chiefs did take their record to 6-0 and fans helped the stadium set a new record for loudest in the NFL, reaching a decibel level of 137.5.