I love this game and play the app frequently. There are several fixes that would make this app outstanding.
One big one is as others were posting, the expert level AI needs a lot of work. I win nearly every game against the "experts" I play.
Which brings me to my next issue... Ive won a lot against "expert" and yet Im still ranked as a "novice." Ranking should be based on all play, not just against "friends", which first of all, half the games I play dont register for some reason anyway, and secondly they are too hard to arrange anyway because all players need to be present for the entire game. Its too hard for people in their busy schedules to play a game all in one sitting. Please develop a similar style to solo play for the games with friends.
The next issue is one that everyone i know who has this app has had fault with. You should be allowed to hit "back" after moving from "attack" to "fortify". It can trick you into hitting "attack" when you want to attack, which then essentially ends your turn!
Lastly, its almost impossible to sweep a win toward the end of a game in any other time setting than 5 min turns. That should be the minimum time available. If, God forbid, you accidentally left the 1 min 20 sec default turns on, then blitz dice are an absolute must, and then forget making strategic moves... Its a race to just get through one continent, let alone several to take the victory when it would have otherwise been completely within reach.
Kohlads about RISK: Global Domination