 | The following references may be useful when improving this article in the future:
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Source
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- https://web.archive.org/web/19970606031947/http://www.next-generation.com:80/news/020797g.chtml
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- https://web.archive.org/web/20000309061519/http://pc.ign.com:80/news/7599.html
- https://web.archive.org/web/20001005231356/http://www.gamespot.co.uk/interviews/1998/cave_uk/12.html