The Las Vegas Raiders and the Kansas City Chiefs supported Hamlin before the game.
The love has been "overwhelmed", he said.
The Raiders and Chiefs wore black T-shirts with "Love for Damar" and Hamlin's jersey number on them before their game.
Hamlin is still in a critical condition according to the Bills.
Hamlin said that when he put real love out into the world, it came back to him three times more.
I'm thankful for each and every one of them.
This will make me stronger, if you know me. Keep praying for me.
The quarterback wore a shirt with a picture of the Bills player and the words "Hamlin strong" written on it before the game.
Hamlin's name and number were displayed on screens inside and outside the stadium while the number three on the 30-yard mark had a painted blue outline.
In their first game since Hamlin collapsed, the Bills will wear number three patches on their jerseys.
Hamlin had his breathing tube removed and the Bills cited his doctors as saying that he has been able to talk to his family and care team.
The Bills game was canceled by the National Football League.
The change to the play-off structure was approved by the owners because the outcome of the game would affect play-off seedings.
After the final round of games take place this weekend, the Bills and Bengals will have their post- season positions determined by their winning percentage over their 16 games.
If the home team had won the game, the game would have been played at a neutral site.
Hamlin, who has been in the intensive care unit at the University of Cincinnati Medical Center, joined a meeting with his team via Facetime on Friday.
He collapsed after tackling a player. Jordon Rooney, the player's friend and marketing agent, said that Hamlin was resuscitated once after falling on his back.
Since the accident, there has been a lot of support for the Bills player.
A toy drive launched by Hamlin has raised more than $7 million on the Go Fund Me.
Tom Brady and Russell Wilson are both quarterbacks in the National Football League.
Hamlin played college football at the University of Pittsburgh and was drafted to the National Football League.