Features:
Ajax navigation
Quests with 3 levels of quest mastery
Loot items (A random chance to get a bonus loot item when completing quests)
2 Types of battle, "one on one" or "invade" with all your army and siege weapons, you can also attack players from their stats page
Land purchasing with incremental land prices, the more you buy the more expensive it becomes
Bonus page - where you can spend battle points, in-game currency to get energy refills or buy premium weapons, you can also complete offer to get battle points, this is how app owners make their money, if you create an interesting game people do pay $$ on buying points
Warehouse - to store your money so it doesn't get stolen by people attacking you
Medic - to heal yourself
Recruit page - a viral page to get more users to your app, people will invite their friends to make their army stronger and thus promoting your game for you.
Gifting - another great viral feature that will promote your app, users can give free gifts to their friends, a great way of getting new users to your app
Ranks - check up who is doing the best on your app
In-Game message system - Message other player from their stats page
Premium Items - Premium items are shown on the homepage and bonus page to encourage the use of the virtual currency
Player Log - Keeps a log of all attacks, This is shown on the homepage with the ability for the player to clear their logs
Army Recruiting buttons - Army request buttons on homepage and invite page, great viral feature using the latest stream publishing
Brag Buttons - Another viral feature using the latest stream publishing to brag about winning fights or completing quests
Daily Refill - Keeps players on your app for longer by giving them a free daily refill of their energy
Progress Bars - Progress bars for you exp and quest progression
Ajax Countdown Timers - Timers appers when stats like energy are not full showing time till next update
Add Bookmark Button - Add bookmark button displayed in the header on all pages, once a player has bookmarked the app its much easier for them to return and play, its supprising how many apps still dont have this button included in their app

Development:
The app script has been in continual development for the last 9 months, it has been used in a live production environment for the last 6 months and we believe it is bug free (as far as we are aware)
In the last 3 months the live app gained around 1000 MAU's and was generating around $80 per month, so you could see how profitable this app could be with 10,000 users or even 100,000 users.