Attendees of the meeting included video game developers, members of Congress, representatives from the Entertainment Software Association (ESA) and the Entertainment Software Rating Board (ESRB), and critics of violent video games.
Trump is apparently bothered by violent content in videogames, but it's nothing new in American culture and it's something that previous administrations have tried to tackle.
It was the latest mass shooting in a country with more than 30,000 gun-related deaths annually.
The objective of the meeting will be to discuss video games and gun violence.
This is the compilation of violent scenes from video games that President Trump used in his meeting with United States video game executives yesterday.
During a cabinet meeting on Thursday, President Trump used an antisemitic dogwhistle while joking about economic adviser Gary Cohn's departure from the White House, then quipped that Cohn might return to the administration after the longtime Goldman Sachs CEO makes "another couple hundred million" in the private sector.
The ESA, which represents the video game industry, has long pushed back against claims that video game violence causes real-life aggression.
Some who favor getting the government involved in gaming restrictions said they'd also like for the White House to focus not only on games, but on other forms of media - TV, film, and music - where violence often shows up.
"The upcoming meeting at the White House will provide the opportunity to have a fact-based conversation about video game ratings, our industry's commitment to parents, and the tools we provide to make informed entertainment choices", it said in a statement. Mr Trump took to Twitter on Saturday morning to say he'd spoken with the prime minister.
Lucas adds that the Canada is a prolific exporter of video games to the U.S. and it is an industry to be proud of.
Yesterday President Donald Trump met with representatives of the video game industry, along with pro-gun representatives and chap who had written a paper linking video game violence to gun violence using research that had been debunked by many, many academics.
Past presidents - including Barack Obama - also suggested there could be a link between violent video games and violence in young people.
At the start of this year he was named Trump's White House director of strategic initiatives - a job placing the New Zealander at the head of a group dubbed "the White House think tank".
It will not be the first time video game-makers have been called to the White House in the wake of a school shooting.