Looks like Grandpa gave up watching football on the TV to playing football with the kids
You will need a football and 3 players to play this game
Defender is a pass and catch game with a quarterback and reciever matching up against a defensive back.
For the young kids, a shorter, narrower field works best. The object is to move down the field and score a touchdown, but the offense can proceed only by completing passes; there's no running with the ball after the catch ( and thus no tackling). Three completions make a first down. If the offense fails to complete the three passes in a four down series, the players switch positions.
Quarterback to receiver,
Receiver to defender
Defender to quiarterback
and play marches back down the field in the opposite direction.
An interception automatically entitle the defender to switch places with the quarterback