Sandbox Earth is a setting suitable for all RPGs set in the modern day. Four billion years in the making it has finally been released! In fact it been arranged so that that it is already at the front door of the readers of this blog. Stepping out you can examine the first of the thousands of locales included in this amazing product. A preview can be viewed here and a detailed review can be found here.
To me the Old School Renaissance is not about playing a particular set of rules in a particular way, the dungeon crawl. It is about going back to the roots of our hobby and seeing what we could do differently. What avenues were not explored because of the commercial and personal interests of the game designers of the time.