If it ain't broke don't fix it.
Allright MMM1 bought me to a point in my life where I could just play flash for hours on end, MMM2 bought me to a point where I could play this game for days! First off the look of the game has been improved slightly, the upgrades have been brodened, and the game has expanded to a whole new level! New modes are a good thing too :P. The sheer amount of upgrades also keep people playing for along time too, especially if they only play campaign. Campaign is also more intresting seeing as how enemies come from differnt sides, although this can be a pain for if you do not read the instructions. I havn't tried the other modes, except for construct mode, but I don't need to because this game is godly!