If you are creating a custom roster of 100 historical players, doing it one-by-one in the game would take weeks. The website allows you to upload 100 DNA files in an afternoon. You can then assign them in the game via the "DNA Import" tool.
This guide will walk you through everything you need to know about the NBA 2K upload process, from technical specs to creative tips, ensuring your designs look crisp in the game. www.nba2k.upload