Planetfall

Planetfall's events unfold after the colonists' arrival on the planet Chiron. Factions are formed on the basis of ideologies rather than nationalities, and from the very first turns the player chooses their stance toward the planet — harmony with the local ecosystem or aggressive terraforming for the sake of humanity.

The mod significantly expands the technology tree, adds new resources, terrain improvements, and an ecology system. Hybrid forests become a distinct landscape element, and the confrontation between ecological factions and terraformers intensifies toward the end of the game. Both a traditional victory and a collective ascent to Transcendence are possible.

Planetfall feels more like a fan-made sequel to Alpha Centauri than a simple remake. It preserves the recognizable factions, psionic combat, and atmosphere of philosophical conflict, while making use of the more convenient interface and capabilities of the Civ IV engine. Despite some technical rough edges, the mod is fully playable and offers a deep strategic experience for fans of classic science fiction.