I am using a Windows Xp computer that is about 10 years old right now. I tried to look in the start menu and it only had Spiral Knights, The opening client. Though It isn't in a specific folder that I know of. I tried searching up how to uninstall it but it seems the Control Panel > Add/Remove Files doesn't have SK on it. If you have anything that I could do, please put a reply. I tried downloads folder. Not there. There should be a uninstall button on the next update :/ Well, for Windows Xp Desktop anyways. Though it currently is slow so I wanted to delete it. Please help?
I'm guessing you installed the game from the web browser.
In that case the game should be in C:\Documents and Settings\\Application Data\spiral. Just delete the "spiral" folder in there clean up the shorcut from your start menu/desktop and the game is gone.