... it's an Unreal-powered PlayStation Network title with cross-buy functionality, meaning whether you buy it on PS Vita or PS3, you'll be able to play it on both platforms.
Its newfound scope means a lot of features have been added to and revised for the sequel. The player's base is a mobile laboratory, from which new zombies can be spawned if they die (or, re-die?) in the field. It's also armed with an auto-turret which can pick off nearby foes, but it can be overrun easily by a large swarm of enemies. Players also control one of four boss monsters, each of which is armed with special abilities helping them fill different roles; damage, support, tanking and so on.
Players also control two hordes of zombies, which can be specialized for different roles after attacking and taking over the appropriate building. Zombies who take over a hardware store, for instance, become engineer zombies, who will be able to take over buildings much faster in the future. Zombies who take over a gym become beefier, giving them an edge in combat.
Like in the first game, all commands are given to your four units (your base, your boss and your two zombie hordes) using their respective buttons. Point to a location on the map and hit triangle to send your base in that direction. Press X to send your boss in after an approaching enemy. The D-pad also activates your boss monster's special abilities, making them something akin to a MOBA hero unit.
The single-player campaign tasks you with using these different mechanics skillfully to complete objectives on a huge map. The new multiplayer mode features a single, symmetrical map, with just one objective: Find your opponent's mobile base and take it over before they do the same. Though there are fewer moving pieces than your traditional strategy game, there's no lack of strategy involved. Do you rush them at the start of the game, hoping they've wasted units taking over nearby buildings? Or do you focus on taking over the town, gaining power in the process?