Is this another one of those situations where sega is selling their old stuff in multiple forms everywhere, then simply decide to update the steam release only? At least I assume so seeing how amazon link doesn't feature any DRM.
First of all, it's not that useful to have information scattered or duplicated in seperate articles. Why not simply have everything under the mega drive/genesis article? I do not think there's enough differences with DRM-Free and Steam legacy version to justify seperate articles and differences like save game data location could easily be notified with collapseable list and all the games under DLC list.