Sony has followed up on its Evolution of PlayStation documentary series with videos covering its portable gaming business and how the company has played a part in redefining the games industry.
We imagine that the reason the PSP and Vita have been included in the same video is because they weren't/haven't exactly been the runaway successes that the PS1 and PS3 were. It's interesting to see the general games video though, as it does highlight a number of titles where Sony has pushed the envelope in terms of interactive entertainment.