Recently uninstalled Shadowverse. Using a disk analyzer, I found it was taking up space. If you're like me and need every drop of Kilobytes at your disposal go to the following directory.

C:\Users\YourUsername\AppData\LocalLow\Cygames
Paste it here \/


This is the folder you may find still located on your drive after uninstalling. Simply delete the Cygames folder to remove the files. Mine was GBs worth and was annoyed to see so much space being used even after deleting the game from steam.

DISCLAIMER: I do not know what all these files entail. I wouldn't delete them unless you are deleting the game forever or know what you are doing.