http://www.officialplaystationmagazine.co.uk/2014/02/26/dead-nation-apocalypse-edition-confirmed-as-marchs-ps-plus-game-on-ps4/

Confirmed by the official magazine, could this also be what they were hinting at last month as the big reveal.

I already have it for PS3 so I'd probably be getting it for free regardless. I don't even remember buying it, though. Was it free on PS3 too?

It was free after the great PSN Heist.

It was one of the games offered after the hacking. I have it too.

This looks to be an updated version for PS4 tho, Apoc Edition will be interesting to see whats new and a great co op game while we wait for Infamous :)

Never played it, but heard good things so I'm happy. Will be looking for coop buddies so give me a shoutout!

Dead Nation on PS3 was an incredibly great game.

Does it have cross play?  I'm downloading it for free, but I have the game on PS3.  Don't own a PS4.  As long as someone plays similar in style to me, I wouldn't mind playing with you. 

Playing this kind of game with someone that doesn't have a similar playstyle, you'd be better off playing alone.  

Good game but most PS3 owners already have this game....

Kinda dissapointed that this is the free PS4 game for March.

Slightly surprised to see Tomb Raider there as the Definitive Edition just came out, was planning to get it on PS4 at some point, but now that i can get it on PS3 via plus, i probably won't.