But in order to avoid being a cheap imitation, the inspired game must expand upon or branch the formula in a new direction. Before its release, the excellent Banjo-Kazooie was seen by some gaming journalists as nothing more than a Super Mario 64 clone. In hindsight, that's an amazingly foolish indictment. But there's the trick: while they do share similarities, they are very different games. Banjo-Kazooie did what a good game inspired by another should do: use a solid foundation and build upon it. Some titles, like Best of Tests DS, takes the solid Brain Age foundation, but instead cuts it open and squeezes lemon juice inside.