The turn-based strategy games are games that have existed since long.
In general, there is a battle against an enemy or group of enemies and you must attack, defend or move in alternation with the enemy's actions.
Thus, no need to hurry with fear the enemy attacks you before you can react. The turn-based games are games in which you can take your time to act and to think of he impact that our actions will have.
When a unit is unable to act, she skips her turn, and it will be to another unit (friend or foe) to act.
The turn-based games require strategy and reflection.