Star Scrappers: Cave-in is a game for 2-4 players who take roles of Galactic entrepreneurs, rival mining bosses who compete in this difficult, sometimes even merciless industry. As a mining boss, you will have to recruit new mercenary laborers, use their skills, and collect precious artifacts. Your job is to excavate the Hexis crystals but never let your guard down though, as your competition is waiting for a chance to buy off your trusted men and steal the bounty from under your nose! The goal of the game is to get as many victory points as possible before the crystal mine collapses.

In the far future, countless alien species explore the galaxy in search of fortune and fame. The last interstellar war ended over fifty years ago and since then peace treaties have been in effect. Trade routes are set, civilizations flourish, and a new source of power was discovered - the Hexis crystals.

Star Scrappers: Cave-in uses a unique game mechanics called "discard building". With every action taken, players put their mercenaries into their discard piles. The order of the discarded cards matters, because your top card is your Leader and gives you a special action at the beginning of your next turn. Beware, if your discard pile grows too much, it will draw the attention of other players who will not hesitate to steal cards from you - they're just bribing your men!