This works a lot like my other game, Zodiac Wars.
If you are a Gryffindor or a Hufflepuff, add 1 point.
If you are a Slytherin or a Ravenclaw, subtract 1 point.
This time, it starts at 25 points. If it gets to 50, Gryffindor and Hufflepuff wins. If it gets to 0, Slytherin and Ravenclaw wins.
Wins:
Gryffindor/Hufflepuff: 2
Slytherin/Ravenclaw: 4
Let’s start; 25