However, no complete edition of his works was ever made.

A further limited edition with the black base was made in 2007.

In the case of the Stanford, company officials say three to five years are needed to make a new edition.

An edition of up to four copies is made from these works.

Later on a second edition was made to replace this one.

In October 2011, the third edition was made available for free online.

Special editions of the game were also made for use in classrooms.

A collector's edition was made available on 2 January 2012.

A special edition was made available in an exclusive tin case.

A limited edition of 1,000 to 1,500 prints is made from each original painting.