EDF 4.1 PS4 $34.99 ($29.99 with PS+)
https://store.playstation.com/#!/en-us/games/earth-defense-force-41-the-shadow-of-new-despair/cid=UP1023-CUSA03131_00-EARTHDEFFORCE4P1
EDF 2 Vita $17.99 ($14.99 with PS+)
https://store.playstation.com/#!/en-us/games/earth-defense-force-2-invaders-from-planet-space/cid=UP1023-PCSE00710_00-EARTHDEFENFORCE2
Valid from 3/21/2016 8AM to 3/28/2016 8AM
https://store.playstation.com/#!/en-us/games/earth-defense-force-41-the-shadow-of-new-despair/cid=UP1023-CUSA03131_00-EARTHDEFFORCE4P1
EDF 2 Vita $17.99 ($14.99 with PS+)
https://store.playstation.com/#!/en-us/games/earth-defense-force-2-invaders-from-planet-space/cid=UP1023-PCSE00710_00-EARTHDEFENFORCE2
Valid from 3/21/2016 8AM to 3/28/2016 8AM