I just checked and Unit 13 along with Escape Plan and Touch my Katamari are "Unavailable" under the 1st birthday sale.
I can still buy them for full price under Vita games though.
Dark Souls 2: Crown of the Sunken King walkthrough Our essential survival guide.
Hearthstone: Naxxramas strategy guide How to beat down those Heroic bosses.
Loading... hold tight!