87 percent of classic video games released before 2010 in the United States have failed to be preserved in any real capacity, according to the Video Game History Foundation (VGHF).
In a new study on classic video games and their "commercial availability," the VGHF found that these older titles are "critically endangered," revealing that video games released between 1975 and 1979 have an availability rate of .89 percent , while the early '90s (1990-1994) has 19.33 percent. Coming in behind the '90s are 2005-2009 (17.89 percent). Less than 3 percent of games released before 1985 remain in print today.
Read more over at Game Developer.