18.12.2017 01:13
Usually, popular Android games have the appropriate option for switching between accounts. However, you should add your Gmail accounts in the BlueStacks settings menu before you launch the game.
To add a new account in BlueStacks, open Settings → Add account (see pic. 1) → Sign in → enter email and password for your new Gmail account → OK → await until it will be found and press Next button → if you don't want to add payments details, just click on No Thanks (see pic. 2) → press Next button.
Your new account will be added to Google option in the Settings menu. You can check it up. Open Settings → Google → there will be additional account (see pic. 3). Now you can switch to this account in games you like.
As for Castle Clash, launch the game and open Settings
→ Switch → choose your account from the list (see pic. 4).