Cognitivefun also has a multimodal n-back, where you can customize most aspects of the test (sounds, images, speed run, double or triple n-back, number of trial

Cognitivefun also has a multimodal n-back, where you can customize most aspects of the test (sounds, images, speed run, double or triple n-back, number of trials): http://cognitivefun.net/test/24 http://cognitivefun.net/test/24