AGILE development process

As almost every company, our company too employs agile development process and that means we have a set of targets (called a part, and to be completed in a set of time) which when completed gives a running output of the game, and we can tell how the game will turn out. Like for example we are making a space shooter kind of game, then it is divided into parts and each part is completed in a set of time, so we have the 'plane' in first time period and then the player sitting in it, then comes the enemies and so on. This technique is especially good for casual games as it is fast and also gives an idea of how the game will look like (when it finishes) as early as the first part is completed, so then we can decide if we wanna go further or change the theme a bit.