I'm currently designing a re-imagining of an old game I played with my family as a child. It was published in 1987 and only ran for a year. I think the publisher is no longer in business and the game is now a collectors item.

I had only intended to create this for friends and family as a gift, but wanted to ask whether selling this game would be an issue as it's closely based on the original, albeit with completely new bespoke graphics created by myself and some new game elements which I have added.

Any thoughts?

I think you'll be pretty safe if they are out of business, especially if the artwork is yours and the name of the game is different.

Of course if in doubt always ask an official legal body for advice, as my thoughts are not legal advice lol.