The depth of a decision.
A game can offer difficult choices without a large vocabulary of exceptions. Look for what limits your options: actions, information, position or a resource that has several competing uses.
The depth of a decision03 / Observations
Games of position, economy and intent
Preparation as part of play.
Before play, identify the public objectives, the resources each participant controls and the point at which the game ends. Everyone should understand which information is visible and which decisions remain uncertain.
Preparation as part of play