If your game has the same idea but has a different layout different art and a different name then you have nothing to worry about.
Not strictly true. If it bears more than a passing resemblance - so much so that its obviously an intentional copy of the same game, you've got problems. Therer are 1000000000000s of exact cloned board games out there.
Thousands of people get murdered. But its still not legal or even morally correct to murder somebody just because other people have gotten away with it. A magistrate would probably lock you up for a hundred years just for having the gall to use that argument as a defence.