From the article, "It's a given that not all Japanese games will make it outside of Japan. Some didn't sell well enough in that country, others were too focused on a certain age group and sometimes they're just too weird.
At the same time, there are quite a few phenomenal or funny games which should get a worldwide release, but don't. Sadly, gamers don't get a list of reasons from publishers or developers as to why we'll never have the honor of playing a domestic version of one of these titles, but usually it is pretty easy to understand why."
More and more Japanese games are being localized every year. Especially as anime and manga series develop larger, worldwide audiences. Jump Force is the latest to show up worldwide. While it might not be the best crossover title or have the most diverse character roster, it might be a good introduction into this sort of world. So, let's go a bit deeper and learn more about Weekly Shonen Jump crossover games.
PeanutButterGamer goes over his top 10 weirdest spin-off video games of all time.
Michibiku's Graham Russell goes over the DS classic Jump Ultimate Stars.
Jump Ultimate Stars is a good import,If your looking for a good DS fighter.