Created during a game jam, Pol Clarrisou's space adventure allows you to explore a universe by entering 6-digit coordinates into the spaceships sat-nav.You might find something wondrous, or nothing at all but there is an exciting element to the exploration as each time you warp you lose fuel and grow a little older. As a teacher I believe this could be used as an interesting stimulus to create a story or discuss space exploration is Science etc.
Have a look yourself, the game is free to download or play (as long as you have Unity installed)