Story highlights Organizers of Tokyo Games reveal shortlist of sports that could be added

They include baseball and softball, roller sports, climbing and squash

Karate and wushu are seeking to join other martial arts in the Olympic fold

(CNN) Could bowling or surfing become Olympic sports at the 2020 Games in Tokyo?

They're on a shortlist of contenders announced by organizers Monday.

The others are baseball and softball, karate, roller sports, climbing, squash and wushu, the Tokyo 2020 Organizing Committee said

The Tokyo organizers will decide in September whether to propose one or more of the sports to the International Olympic Committee for inclusion. The final decision will come in 2016.

After a steady run starting in the 1990s, both baseball and softball were controversially dropped from the Olympic roster for the 2012 Games in London. They've been working hard since to try to get back in.

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