Hi There!

I know most of you already know about Humble Bundle, but I thought this specific bundle was worth a specific mention because it contains 80% of the games I'd consider "essential" buying for anyone who was into gaming. Most of my favourite games of all time are here including CIV, XCOM, RailRoads, etc

 http://www.humblebundle.com

There would be easily 500-1000 hours of gameplay in this particular bundle. A good portion of my teenage years were spent playing CIV games.