Listed below are indicative steps that can be followed in order to create a simple game using the App Inventor.

Design the graphical user interface of the game.

In the App Inventor Designer:

• Select components (Button, Label etc.) from the Palette.
• Drag the selected components into the Viewer area and arrange them to design the appearance of your game.
• From Layout palette, you can use screen arrangements to create HorizontalArrangement (from left to right) , VerticalArrangement (from top to bottom left-aligned), or TableArrangement (in a tabular fashion) of the components.
• The selected components are placed in the Component area and named by App Inventor. You can change the name of these components or delete them, if necessary.
• Add media files (images, sounds) to your game by uploading them from your computer. Media files are listed into the Media area under the Component column.
• By clicking one component from the Viewer area you can change its details (title, background color etc.) that are listed in the Properties area.
• From Drawing and Animation Palette select and configure Canvas, if necessary. On the two-dimensional touch-sensitive rectangular panel of Canvas you can draw and move Balls or ImageSprites.
• Add a Clock component, if necessary. Clock works as a timer firing at regularly set intervals. It is non-visible component that provides manipulations and calculations dealing with time by using the internal clock on the phone or the tablet.

Define the behavior of the components - The Blocks Editor

• Create and initialize global and local variables.
• Select a Built-In Drawer (Control, Logic, Math, Text etc.) or a Component-Specific Drawer (a drawer for each component you created in the Designer) to get a group of blocks for that component. Every Specific component has blocks for event handlers, method calls, setting properties and getting properties.
• Choose and drag the proper blocks into the Viewer area.
• Configure these blocks and snap them appropriately to set game behavior.
• Define procedures to create new blocks of instructions that can be used repeatedly.
• Use procedure and method calls.