They haven't even TRIED to hide the fact that they used the exact same code and layout as TheMafiaBoss.
The only difference is that TheMafiaBoss has cool images to supplement gameplay, a better community of people, better customer service system and bug tracking, and an even bigger prize.
If you want a cheap replica attempt at cashing in on an already established game, go and play Mobster and support theft. If not, go and play the real TMB game - the original, and still the best.