Requires Civilization IV: Beyond the Sword patch 3.19
DOWNLOAD HERE - both the main file and the latest patch
Mirror for the main file
Optional: the SMAC sound files
See the first question in the FAQ on where to place them. THANKS to WarKirby for providing them.
Earth, 2060. A small group of colonists leaves the ravages of Earth for a distant planet orbiting Alpha Centauri's primary star. Their ship, the United Nations Starship Unity, carries them on their journey to a new world and a new hope for humankind. Along the way a reactor malfunction damages the Unity, precipitating a crisis among the ship's seven most powerful leaders. As they enter the Alpha Centauri system, the crew splits into seven distinct factions, divided not by nationality, but by ideology, and their vision for the new world. After the ship breaks apart, the seven leaders guide their chosen crew down to the surface of Planet, seeking their destiny beneath an alien sky.
Planetfall is a mod for Sid Meier's Civilization 4 that uses the storyline and characters from Sid Meier's Alpha Centauri, combined with gameplay that takes the best from SMAC, Civilization, and the modding community.
Planetfall will not be a clone of SMAC using the Civ4 engine, but rather will incorporate the Factions, general storyline and Characters combined with the newest gameplay modifications to allow for more strategic gameplay.
Design & Programming: Maniac
Graphics Lead: Lord Tirian
And many other contributors. See Readme.
Besides in this thread, you can also discuss Planetfall in this forum.