RetroGmer 3.0 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. This free Mac app was originally produced by RetroGmer. 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:
RetroGmer is a Dashboard widget that allows you to play classic arcade games like Donkey Kong, Super Mario, Mario Adventure, Tic Tac Toe, Pac Man, Space Invaders, Phoenix, or 1945 right in your Dashboard.
You may want to check out more software for Mac, such as DatWeatherDoe, which might be similar to RetroGmer.