At this time the Pinside archive 'only' holds Solid State (1975 and later) pinball titles. We do have plans to include EM titles in the archive (probably the most requested feature by Pinside visitors) but because of the work involved we don't know if and when this will be.
Volunteers wanted! If you would like to contribute and help with the effort of adding around 1000 EM games to the archive, meaning spending considerable time adding game information and (backglass) images after we have added the titles, let me know here in this thread. Maybe we can organise this and get the 'project' going.