Bronx resident Antwand Pearman says he's gotten mostly positive messages. The GamerFitNation founder says some player groups with thousands of members have told him they're participating in the cease-fire.
A gunman killed 20 children and six adults at a Newtown, Conn., elementary school last week.
The 29-year-old Pearman has three children. He has a Facebook page and a Twitter account promoting the shooter game cease-fire, which started at noon Friday.
He says video games don't cause violence, as some critics have suggested. He says the cease-fire is meant to show gamers care.