It’s a similar sort of thing to Wario’s previous use of transforming hats and environmental hazards, except it happens far more frequently. And the bad thing about that is the way you have to use the touch screen to transform by drawing a shape directly on top of Wario. You’re constantly using the stylus, be it to swap costumes, direct the laser gun or activate some other kind of attacking move, and it gets very tiring indeed.
Say you have to make a block appear in a room, jump on it to get to a higher platform, then shoot a switch. That would involve drawing the shape to turn into Artist Wario, drawing a shape to make a block appear, drawing another shape to turn into the high-jumping Thief Wario, and yet another one to turn into the Spaceman.
We’re certain we haven’t completely missed the point of it all. There’s no obvious knack to it that makes it slightly less of a pain to play. It really is a platformer where you have to stop, start, stop, start all the way through.