In the rp i do, it's only written, on a kind ofm site know as nova. It allows to create your own characters on the site, and people are more than 1 on making a post, taking turns writing from the different characters view. Say, my character says something to the bartender. The bartender will answer from his/her view. That way it bounces back and forth between characters and people. I do it in a non-gw setting, but i would love to do something similar from gw2