https://wccftech.com/troubled-grand-theft-auto-the-trilogy-rockstar-launcher/

PC players can once again access and purchase Grand Theft Auto The Trilogy - The Definitive Edition through the Rockstar Games Launcher.

Shortly after the release of the trilogy, Take-Two and Rockstar pulled the remastered collection from the Rockstar Games Launcher for PC players due to performance issues and other issues. Shortly after that, various reports claimed that the trilogy’s source code, containing pretty ‘weird’ files, leaked online. Luckily, PC players can now once again access and purchase the remastered trilogy through Rockstar’s own launcher.