Heard of this one while I was listening to
John Medina on Aging Well:
NeurospaceThere are a number of labs working on this kind of thing - not that the games are all that fun but compared to other "brain training," there's at least some scientific rigour to them.
Oh, and
BrainHQ developed under the tutelage of Merzenich! Great stuff, I should really renew my subscription.