14p cheaper than Base. Quite a fun game and one of the few PS4 titles than can be played co-op offline.
Update: Base now has dropped their price just to not be left behind: http://www.base.com/buy/product/kromaia-omega-ps4/dgc-kromps4.htm
The frantic old-school action of classic coin-op SCHMUP comes crashing headlong into the 21st century. Explosive high-octane blasting combines with hordes of enemies in a 360 degree environment - fly, spin and shoot anywhere and everywhere, now on your PlayStation 4!
New exclusive ship
Multiple modes: Story, Score Attack & new Pure Mode
Mix & Match your ship & weapons
Local co-op - one player flies, the other shoots