The Challenging Stage
The games on display here are all over the place in terms of popularity and recognition (and even platforms). Most of the most recent titles are blatantly obvious, but some of the older games will probably confound anyone who either didn't live through the eighties, or has managed to block that baggy-sweater-and-leggings wearing period and its big, stiff hair out of their mind. I actually grew up during that time and still find more than half of these things to be impenetrable. (Perhaps because I admittedly didn't catch on to gaming until after the fourth time or so Zelda needed rescuing.) Some of them will probably click instantly, while others will require a bit more ruminating to decipher.
There's only the one stage, and the only real reward besides the lovely retro art is the knowledge that your brain still works. Although, I guess, if you wanted you could print out the completed results and take them down to the game shop and find the guy who always acts like he knows so much more than you and shove them in his stupid face. (You know the one. I hate him, too.) Not only is it challenging, but it's also a great stroll down memory lane.