This was my first space 4X game. I got a free demo of it, and was totally hooked. It was a very decent game for its time. Of course it was nowhere as deep as Stellaris, or even Galactic Civilizations or Endless Space, but back in 1997-1998, Into The Void was one of my time-sink games, along with Sid Meier's Gettysburg (also unfortunately still missing from GOG), and X-Com Apocalypse. The ability to play by email really made Into The Void a ton of fun, but even the single player experience was very enjoyable. It's a shame that it's been all but forgotten.