According to Steve Ritchie:
STEVE: Oh, World Cup. World Cup was taken over.
MARK: It wasn't a bad pin, it's still all right, actually we still operate it.
STEVE: In the end it turned out to be pretty Ok, but in the beginning it was handled by a newbie. The game designer was a stubborn newbie, and it had to be taken over by someone else.
MARK: Did this happen very often?
STEVE: Actually it never happened before unless somebody died or got sick.
MARK: Did he abandon the project or did he just get the sack?
STEVE: Neither. He cooperated, learned and latter did Theatre of Magic and some other really good work. But when he first came in he thought he just knew everything about making pinballs and it is just not that kind of thing. You have to live it for a long time, you must have an affinity for mechanicals and you have to be able to work with other people.
MARK: Working with others is essential, unless you are a going it alone.
STEVE: No one could make a great pinball alone. The closest I've seen is Brian Eddy on Shadow, I think. I believe he drew the game and then programmed it. It was quite a feat, but he had to learn about mechanicals on that game. It was tough, but I will always admire him for doing that.