The latest version of the game comes with the following improvements: 1. The ability to use and get regen packs 2. Easier ways to spread your referral code through twitter, facebook, email right on your referral code page. 3. The ability to drop allies (at a loss) This version also contains some optimizations and crash fixes. Finally, the reward for referring someone to the game is now 1 free regen crystal, which allows you to regenerate your troops.