If your recollections of arcade games past are starting to fail you, perhaps you just need the Amusement Field Identification Kit in your life.
Illustrated in the style of a traditional field manual, these annotated images—created by Michael Mateyko and Hans Thiessen—detail the design of classic arcade games like Donkey Kong, Pong, Ms. Pac-Man, and SNK's Neo-Geo MVS. Just like they would in a car manual, details are provided which explain specs and key features, and the results are beautiful. You can, in fact, buy a set of the illustrations from Komboh's store. Prices range from $20 to $60, or £12 to £37 before shipping. [Komboh via The Verge]