Lim is a master at sleight of hand, and showed off his talents in the finale when he performed a card trick for host Tyra Banks and "American Ninja Warrior" co-hosts Matt Iseman and Akbar Gbaja-Biamila.
Lim's win was considered quite an upset as 14-year-old British rocker Courtney Hadwin had been the early favorite to win with her Janis Joplin-like voice.
America's Got Talent finds their victor tonight of season 13 and Courtney has a great chance of winning. But despite her success on the show, she's actually a quiet girl, which helps make her relatable to viewers. Given her age and her talent, and popularity among fans, we'd say she has a great chance at nailing the top spot.
His appearance on the magic competition television programme Penn & Teller: Fool Us has racked up over 52 million views on YouTube since it was posted in 2015. They are entertaining and he takes you on an adventure. He turned in another mind-blower the previous night, while revealing how carpal tunnel syndrome dashed his piano-playing hopes and turned him to magic.
He has impressive talent, perseverance and the ability to offer something new with every performance.
MailOnline has contacted representatives for Simon Cowell and Syco for comment.
The music mogul told her: "You were born to be wild - this was wild!" He's a flawless fit for Las Vegas. The finale performance "was my way of growing as a magician, and I think I'm going to follow that path of getting bigger and having a full show".
Acrobatic dance group Zurcaroh finished second, and electric violinist Brian King Joseph was third.
The two-hour finale of America's Got Talent starts tonight at 8/7c on NBC.