While it is a cool ode to the old Mario Bros. arcade game (the setup is nearly the same), I’m not a big fan of the stage.
There is a POW block but it doesn’t really hurt any of your foes.
But like the original game, it can flip stage enemies upside down. Which is actually not a very wise idea because they often just get angry and hurt you.
But I just find it an awkward stage. There’s no true ending to the edges, the paths are cramped, and the CPU monsters get in the way, more often than not.