You are working on a complex turn-based strategy game.
Which feature will keep your audience interested?

A.
Rewards to the player for lucky guesses

B.
The opportunity to the player to evaluate each move carefully

C.
The scope to the player to think fast and act faster

D.
Random events playing a critical role in the outcome of choices

E.
Strong emphasis on hand-eye coordination

Explanation:
http://www.gamasutra.com/view/feature/132368/unlocking_achievements_rewarding_.php