Lo-Fi Games

So I had to request my key from the group, I had no issues getting the key but am confused. Towards the bottom of the message (below the super-long keycode) there was a little message that said they included a steam code, and then a second code followed. The first really long key worked, is the second code a free copy to give away, is it essentially the same key but in shorter form, or is it something else entirely?


Sorry to (possibly) sound like a noob, I'm just curious.