This version of Photoshop required a subscription to Adobe's Creative Cloud service, which at the time, for a single application, started at around (or $49.99 for the complete collection).
Adobe Mercury Graphics Engine (enhanced for 64-bit architectures) adobe photoshop cc 201500 20150529r88 multi portable
Because it does not modify the Windows Registry, it leaves no trace on the host computer when closed. This ensures that it will not conflict with other versions of Adobe software already installed on the machine. System Requirements This version of Photoshop required a subscription to