Played through entirely co-op with my son and had a blast. The cartoony design mixed with a silly, humorous tone works very well. The controls are tight and we loved the gameplay loop of unlocking new forms (there are some really cool design choices at work), working to level them up, and mixing and matching their abilities to create uniquely capable combos for whatever challenge was in front of us. The story is pretty much nothing at all of substance and at about 20 hours to beat the game, it did get repetitive towards the end. Once you've unlocked the forms and leveled them up to A, getting S tier usually required some very tough conditions to match in order to slowly progress them to max, and it just wasn't worth seeking those out. I think I very well might have bounced off of it a lot sooner than I did had I not been playing with someone, too. Glad we played it, though, and do recommend.