Lokus

Well I don't know about top-selling games for the year, but Sins of a Solar Empire had pretty good sales, topping the charts for a few months and it has practically no DRM. It doesn't even ask your cd-key when you install, you use your cd-key to register your copy online to get patches and new content. Great game too, I'm glad it succeeded to help the developer and also to show that DRM isn't necessary to make money.

Edit: Will, the problem is that it doesn't deter pirates at all. Every game with DRM has been cracked, many times before the official release date. Most people won't have issues with DRM but a few will and pirates will have no problems whatsoever. I don't know how easy or not it is to crack ME's or Spore's DRM but at least it's easy to tell when it has been cracked. Some games have DRM that doesn't just prevent you from playing, it degrades your playing experience like killing your entire party before the last boss or making your character control strangely and be unable to reload. With those, the crackers release a crack that just removes the cd-check or something and release it while later on pirates encounter these problems. So in those cases it may take weeks or months for crackers to completely bypass the DRM but I bet ME and Spore will be cracked within days of release.

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