Google Helps Bring Quantum Physics to Minecraft   Most people
probably don't know much about quantum mechanics, but quite a
few of you are familiar with Minecraft. An ambitious new mod
called qCraft aims to marry the two, and teach us all a little
something in the process.  With the qCraft mod, players can
experiment with quantum entanglement, superposition, and
observer dependency, and quantum computers. Of course, the
developers stress that this isn't a quantum physics simulator,
but rather an approximation of the concepts to help people
understand the quantum world, which looks at the very bizarre
things that happen when things are very, very small.  Using
materials in the game, players can create observer-dependent
blocks that change depending on how you view them. For instance,
a block could be configured to be stone when seen from east or
west, but wood when seen from north or south. Use quantum
entanglement on a group of observer-dependent blocks and they
all change state when one of them is observed.