The Starter Edition includes the full and complete version of the game. That means you get both the single-player and multiplayer modes, as well as all the maps. Campaign a full fledge story mode of 18 missions. Takes about 5-6 hours to finish.
Feel bad for the devs of this game. Recently they made a mistake bu banning all keys... one of the devs comments: "I love the irony that nobody plays the game, however the moment I made a mistake I reach an audience bigger than I have ever got."
Accidentally banning all keys torpedoed his reviews but at the same time, most publicity he's ever had plus now because of it a temporarily FREE game.