Game Design Document

March 15, 2010


Before creating your game it is a good idea to write a games design document. These can be quite large documents covering all aspects of the game, however, since you are developing a simplifed prototype a shortened version will do for this stage.

Your design document should include the following headings

Description

Game objects

Sounds

Controls

Game flow

Levels

Here is an example from a Game Maker tutorial

1945 design document

Description

In this game you control a plane flying over a sea. You encounter an increasing number of enemy planes that try to destroy you. You should avoid these or shoot them. The goal is to stay alive as long as you can and to destroy as many enemy planes as you can.

Game objects

The background is formed by a scrolling sea with some islands. The player’s plane flies over this sea. You can shoot bullets that destroy enemy planes. There are four types of enemy planes: a plane that you encounter and should be destroyed, a plane that fires bullets downwards, a plane that fires bullets towards the player’s plane, and a fast enemy plane that comes from behind rather than from the front.

Sounds

There are some explosion sounds and there is some background music. Controls The player controls the game with the arrow keys. With the space key you fire a bullet. Only one bullet can be fired every five steps.

Game flow

The player immediately jumps into the game. The player has three lives. When all lives are gone a high-score table is shown. Pressing the (help) key will give a brief explanation. Pressing the key will end the game.

Levels

There is just one level, but more and more enemy planes will arrive: first only the easy type but later the more difficult types.

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