The "NBA2K14.PC.CloneDVD-3DM" refers to a specific version of the game that has been ripped and made available for download. For users who have downloaded this version, CloneDVD can be used to create a playable copy on their PC.
This era of NBA 2K was built on the "OldGen" engine for PC, making it highly accessible for older hardware. NBA 2K14 system requirements - Can You RUN It NBA2K14.PC.CloneDVD-3DM
This article is a deep dive into what that file name means, why it became legendary, and how it represents the final great hurrah of the "CloneDVD" era for sports games on the PC platform. The "NBA2K14