Thankfully the CoD mass has dropped in numbers and is less prominant now.
There's still a group of people in my year who play it regularly, and pretty much only play it (As well as Fifa), but they keep to themselves to discuss how much they enjoyed not talking to each other and pressing triggers since they got home.
It's a good thing the CoD-Squad, as they're known, just talk between themselves.
I have no friends who play Blockland or Minecraft at my current school, but my old school, which I'm still in contact with, has a number of my friends who play it.
3 of my friends from there play Blockland, and 4-6 of them play Minecraft.
I've only got 1 friend at my current school who is interested in any of the games, and he's interested, sort of, in Minecraft. But, he's been put off of buying it, because he played the free creative/classic version, which obviously, has a tiny amount of the content that the current Beta contains.
But he's a bit of a dumb-o, anyway.