Minecraft blocks can float in mid-air, legos can't; Minecraft has running water, lego didn't; Minecraft has so many blocks that lego doesn't have and vice versa; You can fly, make machines with redstone and commands, die and respawn, find glitches in the game, etc. and legos can't; lego has curvy blocks, Minecraft doesn't; yada-yada-yada, you get the idea, case closed!