Phogs! (2020)

Each person steers one end of a stretchy, two-headed dog, turning a route through the world into a shared physical puzzle. Biting, stretching and holding on give both heads useful jobs without needing a separate character build or precise weapon aim. The connected body also means you can pull each other into a muddle, so agree where you are going before the heroic lunge. Choose it for cooperative silliness and a relatively small set of actions, with a little practice for coordinated movement.