Use arrow keys to move, and q and e to rotate in the 3rd dimension. Click to place/mine a block. ------------------------------------------------------------------------- This is a 2 dimensional slice of a 3 dimensional world. This is also what it would look like for a 2 dimensional character to be able to interact and place blocks in a 3 dimensional world.
This is very similar to Mashpoe's game "4d miner," but with a lot fewer features and the world is in 3 dimensions, not 4.