Right now, MiniDayZ's multiplayer mode does not feature all single-player elements; one notable omission is crafting. However, Bohemia says crafting, along other other features like potentially even more multiplayer modes, will be released later through future updates.
See below for a breakdown, provided by Bohemia, of all the MiniDayZ features available right now and those coming later.
Just like the main version of DayZ, MiniDayZ challenges players to survive in a ruthless world full of zombies--and now other human characters. One major difference apart from the visuals is that MiniDayZ is played from a top-down perspective.
You can play MiniDayZ in your browser right now through Bohemia's website or GameStop's Kongregate online game hub.