27 Panic

The Crommelin Comet (27P)  reaches its closest distance to Earth ‒ its periapsis, every 27 years.  Scientists have recently discovered a mistake in its orbital calculations and predict that it will collide with Earth in the year 2038!  

In 27 Panic, your team of scientists must work together to launch the cargo of explosives at the Crommelin Comet as it approaches Earth in 4 different years, simultaneously.  To do this, all of your cargo must have a path to the rocket station by way of railroad.  If, however, any one of your trains falls off the track before it reaches the station, you fail the mission!