Brawl has many good stages but here are the 3 worst in my opinion

3.skyworld. This stage is bad because if you bad becaus once you break a block thing you fall right thought. Also some special up mves don't work like olimars. Also it is hard to get around.

2.New Pork City, This stage is just to big. Stock matches take forever Some final smashes are also useless

1. Hanenbow, This stage is just useless. the water isn't water the leaves are hard to get on. also the fishes can distract you.

Well those are the worst 3 stages in brawl. But it is still a awesome game