While I wasn't paying attention, Glen K. finished documenting his analog pong game, complete with nice hand-drawn schematics.

(Original EEVBlog thread: http://www.eevblog.com/forum/projects/oscilloscope-pong-for-1-or-2-players/)

He's now working on an asteroids game: http://www.eevblog.com/forum/projects/asteroids-we-don't-need-not-stinkin'-micro-processor!/