In Washington DC Subway Memory Game you have to guess the names of as many DC Metro stations as you can. There are no extra points for guessing the location, though I would happily pay for that in-app purchase. After seven years of staring at those ceilings while commuting to Bethesda one would think I would be most familiar with the red line, and one would be correct — I had 23 of 27. My worst was the orange: 7 of 26, and two of those were overlaps with other lines.
If you liked the previously mentioned Secrets of… videos and station layout maps, this one is well worth checking out. (↬r/washingtondc, whose users of course had some rather uncharitable comments about bugginess of a free game made by an enthusiast. Never change, DC!)