While it's a good idea on paper, the tech is just not good enough to pull it off.
It's a shame, then, that this game is a massive disapointment to anyone who's played a previous WarioWare game.
Let's start with the whole premise. Wario, yet again being a gready nose-picking fat-ass, (no offence to you Wario Fans.) Sees a show on TV staring a man known as Count Canaloni. (that probably isn't spelt right.) Using a magic wand, the Count Changes to the master thief known as the Silver Zephyr. Seeing this, Wario desides to create a helmet to go into TV land and steal the wand. Who knows how Wario got enough inteligence to build a helmet to go into TV world, but didn't have the brains to mass produce it and make a ton of cash. But then again, that would make a pretty bad ga... wait, never mind.
Anyway, Wario stells the wand, And becomes a superhero. Dubing himself "The Purple Wind," With the catchphrase "Silent But Deadly!" Wario farts... Er, Rushes off to go on a magical journey to get the magical treasures of TV land, the land that is made, of course, by gready big-band companies who would NEVER think of grabing the treasure themselves.
But let's get back to that wand. The wand, which can strangly talk, tells wario of A mistic treasure known as "The Wishstone," which... grants wishes. Unfortunatly, it's been split into 5 parts, (Plot Conviniance FTW!) so Wario goes to find the Wishstone pieces and get a crap-load of money. Cue 10 hours of strange egyptian references, An evil rich guy, and deadly dlophin kings. It isn't shakespeare by any means, but that's true for all the wario games. They've always had good gameplay to combat this, however, and this is where Master Of Disguise fails.
When the magic wand eats gems, you gain new costumes, or mastery of old ones. To change disgueses, you draw symbols over wario. Anyone who knows their tech, however, should realise that making multiple symbols to draw is a near death sentence. Why?
Computers can find it VERY HARD to tell one symbol from another, and they get mixed up often. This, along with the fact that you probably can't draw acurate symbols and mach 9, can cause you to change into the wrong costume at the wrong time, and maybe even fail the mission (or rather episode) altogether. You could draw the symbol slowly, but the boss battles require quick swiching of costumes. It can be frustrating, and to add to that, the bosses could have been insultingly easy were it not for the broken machanics.
At the bottom left corner of any boss fight, the costume required IS SHOWN TO YOU. This means you don't need to experiment too much for boss fights. Of course, experimenting with this symbol recignition while a dolphin is trying to shove it's snout up your ass is never a good idea.
One of the worst things is that most of these costumes are useful only in very spicific situations. For instance, you COULD run around in a ship, but it wouldn't be a good idea. You COULD just be artist wario for the whole stage, but you wouldn't get anywhere. Your first two costumes, Cosmic Wario and thief wario, will be your most used costumes. The Blocks and holes will become rotine, even after the games atempts to swich it up between levels, Because the levels are about a hour long.
Collecting treasure should be cool, but it becomes a grind. Opening a chest starts a random minigame al la Warioware: touched! Unfortunatly, there are only about 7 minigames, and the shear number of chests to find makes every one of them boring by the second stage.
The graphics are pretty good, but we've come to expect 3d graphics in some way for most games. Maybe if Master Of Disguise was more like the warioland games of days past, I would let this go. But still, a bit of 3D graphics and some more enemy animation would be nice!
While some argue that warioworld killed off the warioland days, I blame this game. It's bland gameplay does nothing to hide the fact that this game seems to be a throwback to the days where tacked-on touch controls were the norm, and those are days we all want to forget.