Summary
Be yourself - be a cockroach
The Good
We all knew what adventures had to be like in 1996. You had a point&click interface, steering around a human guy lugging tons around in his invisible inventory. Then "Bad Mojo" crossed our way and everything changed.
Not only that you aren't human (you're a cockroach), you also do not have an inventory (you're a cockroach). Now what? You don't know why you became a nasty insect, nor how to change back to your human body. But when you start to figure it out, things get freaky. The designers managed to let you see the whole small world of your apartment with the eyes of a cockroach. And suddenly crossing the bathroom becomes dangerous, a cat turns into an invincible monster and everything you plan may become obsolete with a brick in your way.
The Bad
You will be steering your little insect using the keypads, which makes it sometimes difficult to get exactly where you wanted to go. This is a pity, because some puzzles need precise steering. (E.g. you will be required to sneak past a sleeping rat - a dangerous animal, once it's awake)
Another thing is the use of 16 Bit Quicktime videos within the game. This might cause serious problems on newer systems, since Apple's not really always downward compatible.
The Bottom Line
"Bad Mojo" is very different from other adventures because it requires you to think along lines you wouldn't have normally. You don't ask yourself usually whether this would be a cockroach's approach to a problem, do you?