"It's a selection trial [for the World Cup], that's what [coach Tim Sheens] Sheensy said to us today," he said.
"We all know that and with the squad that he's picked, it gives us confidence to know we're in the group to be selected for the World Cup team."
He admits he didn't expect to be picked in the side, after limited game time in the back half of the NRL season.
"It's always good to get a game under your legs, and playing PNG is probably one of the most aggressive teams in the world," he said.
"Playing in their home town with the locals being there, it'll definitely be a passion-filled game."
On his recovery process after injuring his hamstring, Hayne says it's been coming along well.
"I feel good, I feel fresh; I missed a lot of footy and there's still a lot of footy to play and I'm looking forward to it," he said.
"It's about 80% at the moment but I'll continue training, and I'm getting there and playing this game, I'll keep training right up until selection."
Click here to see what else Jarryd said about his commitment to be an Eel for life.