TransGaming's WineX is "an alternative implementation of Microsoft's Win32 Application Programming Interfaces (API), which form the basis of all Windows software, from spreadsheets to video games. The Win32 APIs themselves are extremely broad, covering thousands of functions including graphics, window management, memory, file and disk access, communications, and so on. By migrating the APIs to alternate platforms and mapping hardware accelerated DirectX calls to these platforms, TransGaming's portability solution achieves a unique compatibility that, in some cases, allows many Windows games to run directly out of the box, and without a significant performance penalty."

License: commercial (Subscription service)

Additional System Requirements: Good 3D Card (NVIDIA recommended)