Right now the game has NO single player, However the Devs promise that there will be a single Player campaign with a story line. So until then this Review is for the Mulitplayer only.
Although it is fun to play the lack of any choice when it comes to guns,armor, even your avatar's look, makes the game get old very fast. There is rarely more than one server with players on it, and sometimes when the server reaches 16 players you wont be allowed in with the game saying "Error: Server is full" even thought the limit says 18. Hopefully when the game progresses more there will be more players. The game sells for $14.99 USD. Unless you get the Spearhead version in which you get all "including all future updates and expansions". i dont understand that really, "All future updates?" you get the updates no matter what version you have... right?
if you want to invest in a small game that may one day become the PC's Halo then checkout Interstellar Marines from Zeropoint Software on Steam.