With Maven you can create a Royale Project using Maven Archetypes. The following step-by-step guide is for Mac users, but Windows users can follow similar steps.

1. Open the Terminal Window and go to the folder where you want to create your new Royale Project (i.e: cd ~/Desktop, to create the project directly in Desktop).
2. Follow this example command to create your project:

mvn archetype:generate -DarchetypeGroupId=org.apache.royale.framework -DarchetypeArtifactId=royale-simple-application-archetype -DarchetypeVersion=0.9.8-SNAPSHOT

3. Maven will start to create the new project from scratch and will ask you these questions (I have included sample responses):

Define value for property 'groupId': : org.apache.royale.examples
Define value for property 'artifactId': : ASimpleRoyaleTestApp
Define value for property 'version':  1.0-SNAPSHOT: : 
Define value for property 'package':  org.apache.royale.examples: : 
Confirm properties configuration:
groupId: org.apache.royale.examples
artifactId: ASimpleFlexJSTestApp
version: 1.0-SNAPSHOT
package: org.apache.royale.examples
Y: : Y

You should now have a project folder called ASimpleRoyaleTestApp (or whatever name you gave it) in the folder you have located in step 1. Inside the project you will have a basic application, located in the /src/main/flex folder, with the following code created.

<js:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                xmlns:js="library://ns.apache.org/royale/basic" >
  <js:valuesImpl>
     <js:SimpleCSSValuesImpl />
  </js:valuesImpl>
  <js:initialView>
     <js:View>
       <js:Label text="Hello World!" />
    </js:View>
  </js:initialView>
</js:Application>

To build the created project, go to the root folder where Maven pom.xml file is located and enter:

mvn clean install

Note: you can add "-P option-with-swf" to build SWF and "-DskipTests" to avoid tests