You must own the game on Steam or mobile to get the Data.rsdk file.
Here are a few options for a post, depending on where you are posting (e.g., a gaming forum, a social media channel, or a blog). sonic cd restored android download
file from a version of Sonic CD you own, such as the Steam version or Sonic Origins Setup Folders : Create a folder named You must own the game on Steam or mobile to get the Data