Quoting a jayisgames.com review of TSG: You, playing the part of a heavily armed mining company, must set up shop in the midst of the 'roids and extract their mineralistic goodness. That's it. Game over.
HOLD ON THERE ARE SPACE PIRATES. Hundreds and hundreds of them, actually. It seems that the best asteroid belts lie within pirate territory, and they love nothing more than to crack open space miners' skulls and feast on their space brains. Expect them to send unbelievably huge swarms of space ships to accomplish that space goal, which results in some space gigantic and space exciting space battles. Space.