Any Bioware game (DA:O, DA2, ME, ME2).Regarding the main theme, I'm not sure if a registration requirement or a CD key (for addicional content) could be considered DRM. From the DRM Wiki articule: "The term is used to describe any technology that inhibits uses of digital content that is not desired or intended by the content provider. The term does not generally refer to other forms of copy protection, which can be circumvented without modifying the file or device, such as serial numbers or keyfiles." So, maybe yes, another layer of control, but not DRM. There speculation in other thread if maybe the GOG versión has the DRM file but innactive (no proofs by the moment)Im not a big fan of registration (always though how awful can be if an offline customer buy the game without knowing this part) but again its not a big deal to me.