From the article, "Good news for people who spent $6 on the Fire Emblem: Awakening The Golden Pack DLC on February 14, 2013. You can now download EXPonential Growth, the second of the three “booster” maps today. The next map in the DLC pack became available after 12pm CST on February 21, 2013. Surprisingly, it isn’t available to everyone to buy on its own. You can only download EXPonential Growth if you went in for the $6 The Golden Pack DLC."