Game is good. same mechanics as Dead Nation. Coop works good. it is some kind of DESTINY from the TOP view. weapons, theme etc. strongly recommended. 19.99 USD to u i guess. https://www.playstation.com/en-au/games/alienation-ps4/
I am enjoying playing it much more than I did with Helldivers. The graphics are amazing. Butter smooth gameplay, with big weapons. Well worth the £15 price tag.
It has coop, as we played together. Do you mean local co-op? They planning to add it in with a patch soon.