Any free iPhone games where you must adapt to challenges that are thrown at you?

Pretty self explanatory.

I've know a phone game for your iphone, it's Order&Chaos Oline! You can have a try! Sometimes I'm so bored, I just played them!
Join thousands of players, enjoy unprecedented MMORPG game on the Android experience: the team up with friends, together to complete the task, to explore magnificent fantasy world, achievement heroic feats, leading your team on top of multiplayer games!
The ultimate mobile phone network game experience, using advanced role creation system, make belong to your character, show the pure MMORPG style.
? 5 classic fantasy RACES to choose from: elves and men fight for order; The orc and undead born to chaos, while new Mendel remained neutral. Can build up to four different roles involved in the game.
? Select your gender, appearance, professional and talent. 1000 more than 1000 kinds of skills and props, to assist you to complete the task, make your adventures.
Interact with the community? Explore Haradon world alone, or experience the real multiplayer mode: friends, enemies, trading, duel, communication, etc. Diverse interactions for each player in the game world is active.
? Joined clans or guilds to enhance their own strength, and cooperate with teammates, overcome the MMO game is the most challenging levels: our legendary dungeon.
Join epic multiplayer battles, the culmination of Haradon lead your team.
The world is in your hands? In extremely magnificent fantasy world, from the black forest to desert, the jungle, mountains and other places, to walk or magic way to navigate around.
? Talk and interact with hundreds of characters, there are over 1200 tasks waiting for you to complete.
Join the fun MMORPG mobile games, now became a legend!
Designed for love MMO games, role-playing games, multiplayer and heroic fantasy game players