The game Planetary Destruction was inspired by the dark forest version of the Fermi Paradox.
In its simplest form, it asks the question: 'If odds are good that many advanced alien races exist, how come none have been discovered?'
The answer, according to the dark forest theory, is that all civilizations that are found to exhibit intelligent life are immediately and utterly destroyed. Why bother facing a potential enemy tomorrow, when they can be turned into ash today.
This game captures some of that sense of desperation, but remains simple in its implementation.
As such, there are three actions to choose from each turn: bomb one planet, search a general area for enemy colonies nearby, and search two planets for enemy colonies to confirm their specific location.
The galaxy is a dark forest, filled with ravenous enemies.
There can only be one victor.