According to macworld, a Mac port of A Vampyre Story is available now.
Virtual Programming announced Friday the release of A Vampyre Story for Mac, a graphical adventure game only recently released for Windows (it came out in November). It costs $29.95.More details here, and the download/purchase page on Deliver2Mac is here.
System requirements call for Mac OS X 10.4.11 or later, G4 1.33GHz or faster, Nvidia GeForce 5200, ATI Radeon 9600 or Intel GMA950 or better 3D graphics with at least 64MB VRAM, 512MB RAM, 3GB hard disk space, Internet connection for registration.
A Vampyre Story is available for direct purchase and download from the Deliver2Mac Web site.