the origin template is not available

I think this command: "$ activator new my-first-app play-scala" doesn't work any more. When I use this command to create a new application, activator give me this error message as following: 
Fetching the latest list of templates...

Template name 'play-scala' wasn't found in the template catalog.
Try these template names: reactive-maps, reactive-stocks, hello-akka, hello-scala, hello-slick, hello-play
or see all templates at http://typesafe.com/activator/templates or with 'activator list-templates'