I'm going to take away something that my brother uses multiple times a day
Why do want to take something away from him that he uses every day?
I lost a bunch of games to him and I'm really annoyed about it, so I want to annoy him too.
That is not very nice of you. It is wrong to take someone else's belongings. It seems you are being a poor sport about it and need to practice more to get better.
But it's way funnier to just take something away from him.
It won't be funny when he gets really annoyed at you for taking his things. How would you feel if someone took something of yours that was really important to you?