The 21-year-old made his Kiwi debut at centre and scored the opening try in the 18-36 loss to England in Denver, United States, on June 24.
In his recent contribution to PlayersVoice, the Australian website which allows sportspeople to share their thoughts, hopes, dreams and fears, Marsters said playing for the Kiwis was a dream come true.
“It was massive for me, playing for the Kiwis. I loved being in camp with the team. Watching a Kiwi legend like Issac Luke go about his business was great and I loved being around other guys making their debut like Jamayne Isaako,” Marsters wrote.
“Scoring a try – so much emotion went into that try. Growing up as a kid, you always dream of those moments.
“I was so proud that my family got to see that. It was exciting too, knowing how much inspiration I got from the players who have come before me, to think about kids in New Zealand watching me score that try.”
Marsters said playing alongside his childhood idol Benji Marshall with the Wests Tigers was another of his major accomplishments.
“Benji Marshall was one of those players who was a massive inspiration for me. To now be able to train and play with him every week at Wests Tigers, it’s amazing.
“I’m very lucky to have that opportunity. Not many people can say they’ve played with one of the legends of the game and one of their heroes.”
Marsters, who played for the Cook Islands in their 2015 match against Tonga before representing the Junior Kiwis in a match against the Junior Kangaroos, is one of the more exciting prospects in the NRL competition.