Quite a good idea. And good fun. Some suggestions for improvement:<p>1: The photos are very US centric. So difficult for the rest of us to have any context to work from [eg: Jeopardy quiz show, long distance US city street scenes, basketball matches, cheerleaders, etc]<p>2: Similar to above. Some of the photos are of things like long range city street scenes or beach scenes where there's nothing much to go on as regards recognising the 'accoutrements' of a particular era. The photos which work best are ones where there are decent views of people's clothing, vehicles, machinery, etc. You need to give us something specific to the era in question, to go on!<p>3: I think the 'High Score' functionality is broken. It's still showing my first go as my high score. Even though I've bettered that every time since. It might also be good to eventually have a leaderboard, so we could place ourselves amongst other high scorers. [EDIT: High score has started working now. Must have been a glitch].<p>BTW - for anyone else playing, you can use 2-finger trackpad scrolling to zoom in and out on the photos [a la Google Maps]. I only discovered this by accident and it made things a lot better as, in some of the photos, the people and 'devices' are very tiny.