...and even if they don't break...THEY WON'T FIT! If any of the true lego nerds out there have ever tried to build anything relatively substantial with a combination of Mega Bloks and Lego, they have probably come to notice that, when stacking "standard" bricks, which have a thickness 3x that of "plate" bricks, the Bloks are actually slightly short, not necessarily enough for one to notice in one layer, but just enough to create a frustrating lopsided-ness and structural flaws in big enough models. This offset also tends to be by some impossible increment, such as 1/6th of a brick-height... SO THERE.