Join GameSpot as we celebrate gaming history and give recognition to some of the most influential games of the 21st century. These aren't necessarily the best games, nor are they games that you need to rush out and play today. There's no question, however, that they've left an indelible mark on gaming at large.

During the second half of May, we'll revisit games that redefined expectations of players, whether by expanding rigid genre definitions or tackling unexplored subject matter. We'll also lift up about games that would go on to inspire a generation of game developers, and of course, a few juggernauts that would permanently alter the business of games as we know it. As voted by GameSpot staff, these are 10 of the most influential games of the 21st century.