We use that word when someone keeps asking you the same thing or telling you the same thing.
It’s kind of like expressing your emotion.
だーかーらー “I keep telling you no”
だーかーらー“I keep telling you to do”
だーかーらー“I’ve told you many times”
だーかーらー“Your asking the same thing over and over”
So in this sentence
It means “I keep telling you no. You like this game so much?”
You can also say
だーかーらー。and after say your feelings.
Just like this.