How
to control the difficulty?
a.) Limits (time, resources, units)
b.) positioning enemies
c.) AI and Scripted Sequences (this include the former topic 6 "Artificial
Intelligence and Scripted Sequences - making the game living")
Ways
to keep the player glued to the game:
a.) heroes
b.) role playing elements
c.) story (Why, how and when to use cut scenes? | The usage of speech
and language in games)