MaK - Indie game with engineering/construction
Those who like redstone engineering may be interested in the game MaK being developed by an Indie studio. From the two videos showing the protoype, there are building blocks, circuits, functional blocks and most importantly, it is set in space. This means every way is up and gravity is localised to the body you are on.
They are planning to have some in-game enemies so there will eventually be some competition on it and the blocks seem to limit the creativity to engineering, but it looks interesting.