everything in here and more detail http://wiki.spiralknights.com/Steam_FAQ
Option:" select use steam account to log on " does not appear, cannot log in.
You say that computer doesn't have Steam? All you gotta do is install Steam onto that computer, uninstall the SK program, then instal the Steam SK and you're all good. You have to log in through the Steam client, otherwise you can't access your account.
I'm running the game through Steam, and it simply doesn't have the option for signing in through Steam. The game only has the standard login or play as guest options.
I'm not alone in experiencing this issue!
I started my SK account on steam, so I don't have the transferring over problem. I have the same issue as Honeyphos. There's no "sign in using Steam account" option available. Just the normal login like non-steam players would see, and the log in as guest box.
Not sure what the problem here would be.
Please I have this awesome character... I've actually spent lots and lots of hours! I really don't want to loose it all.. :(
Hope someone have a solution for me T___T
cheers....