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I really hate to say this but I hope this doesn't somehow get taken down for copyright.


Me too! Since no actual Jurassic Park trademarks are used afaik, it would be the current owner of the game copyright to take it down, originally Ocean Software. They've gone through a number of owners and I think currently Atari owns them. Since it's "just" the game copyright of a now defunct publisher, I think as long as it's under the radar it'll be fine. It's basically a fan game, not making any money, not infringing on major license trademarks. 

As long as he keeps the Jurassic park trademark out of it and just calls it Visitor center it should be fine. Pretty sure nobody owns the copyright to "Visitor Center".