Skyrocket 2.1.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this free software for Mac is Nick Zitzmann. The application belongs to Theming Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
Skyrocket provides 3d aural & visual fireworks screensaver for your Mac OS X port. Fireworks shot up from a football field light up the night sky over a city in this highly customizable screensaver. The camera actively hovers through the colorful explosions under the clouds and stars.
You may want to check out more software for Mac, such as CuriousCaverns or 1Focus, which might be similar to Skyrocket.