Since these haven't been posted yet (I don't think), Dungeon Travellers 1 is coming to Vita in Japan:
http://gematsu.com/2015/01/toheart2-dungeon-travelers-coming-ps-vita
Also, that Date a Live port contains both PS3 games:
http://gematsu.com/2015/01/toheart2-dungeon-travelers-coming-ps-vita
Here's Bluemoania playing Citizens of Earth:
https://www.youtube.com/watch?v=lM-IQ_0fjtc
And here's some gameplay of Yakuza 0 app:
https://www.youtube.com/watch?v=tltdpGOTRvI