It's a remarkable total, and the amount of items they've both added at this point is pretty staggering - thanks to both of them!
June 2017 - January 2017 - January 2016 - January 2015 - January 2014 - January 2013 - January 2012 - January 2011 - January 2010 - January 2009
(Click to enlarge)
An explanation: each coloured shape in the graph represents a platform. The horizontal axis is time. The vertical axis represents the number of games released. So the height of a shape on a given point in time indicates the number of games released for that platform that year. The total height of the graph on a given point in time shows the total releases that year.
[All data taken from MobyGames. Of course, the graph is only as complete as our database is - meaning we currently undercount some new digital game platforms like PC/Mac, digital console, and iOS/Android since we don't 'scrape' those databases automatically - and the dropoff in 2015 and 2016 is because we're still entering newer games into the database. Come help us if you can!]
"It's been a while since I hit you fine folks with a round of my little game, but I hope that it takes you a few more minutes to guess the game-related source of all these letters than it did last time"
The existing forum thread has some correct guesses but there's still quite a few missing letters!