Deleted Account after cleared Data

Hello guys,

so after updating my HTC M8 i had the error Message "Unfortunately the process com.google.process.gapps has stopped"
popping up all the time, I searched the Internet for solutions and cleared Data from Google Play Store,
Google Play Services and Google Services Framework.
After that i restarted my Phone, the error Message didn't appear anymore, but when i opened a Game i frequently played
before , BrainWars, it just went back to the beginning , to "select a Username".
The thing is, I still get regulary Message Notifications from people I had in my friendlist from my old Account
but when I open it, it just leads to my new BrainWars Account.
So, is there any possibility to restore the old Account ?

 

Yes of course.