Any fun ideas for kids’ birthday parties in Halifax?

Hey everyone,
I’m a dad here in Halifax, and my little guy is turning 5 soon. He’s super active, loves anything fun, and we’ll probably have around 15–20 kids of different ages coming, plus family.
I’ve been looking for something that would keep everyone entertained. Maybe you have recommendations for unique birthday entertainment in Halifax / HRM? I’m trying to make this one really memorable for him.

Thanks