We're sorry for any inconvenience.
Players can play and enjoy Line of Sight with two clients but we haven't support account transfer function.
So, players should make and use their account according to client you want to use.
To download steam client, you need to set up steam and need to make an account. You can download G&G client and make an account from
our official web page www.gamengame.com.
If you have any problems when you play with steam, contact to our fan page https://www.facebook.com/LineOfSightGlobal/?fref=ts here.