What can you find here?

The game doesn't have trading cards yet but developers say they're adding them in some weeks, but since it is worth $14.99 adds already some value to your account which helps in some trading helpsites that require ur account to have x value on games.
To get ur key you must simply follow this steps,

1. Go to the website[na.alienwarearena.com];
   
2. Click at "Get Key";
   
3. Simply register at their website or login with Steam/Facebook;
   
4. Go to ur account settings and press on the giveaways section;
   
5. And there will be your game key which you may insert on steam.