Released in October 2009, the PSP Go ditched the PSP's UMD drive and experimented with a distribution strategy based entirely off downloadable content. Perhaps a bit before its time the PSP Go met its end in 2011 -- except in North America.
Why it died: While the PSP Go offered a number of compelling features, those additions came with a big price tag. The device was originally sold for $249, a full $80 higher than what the PSP-3000 sold for. That, coupled with its smaller screen and inability to transfer previously-purchased titles, made the PSP Go a major no-go for many consumers.