Explore the technology tree in Sid Meier's Civilization IV Planetfall mod

Recommended Files

Overthinked Doom 3Doom 3 (2004)
Overthinked Doom 3 is a deep rework of Doom 3 that doesn't try to bring the game closer to the classic entries in the series — instead, it leans into its identity as a sci-fi survival horror. The mod emphasizes a slow pace, tense atmosphere, and a constant sense of threat, turning every encounter into a fight for survival.

Half-Life: RallyHalf-Life (1998)
Half-Life: Rally is perhaps the most unusual mod for Half-Life, which takes Half-Life to a completely new level — now instead of weapons, the main tool becomes a car and the ability to outrace competitors. The goal is simple: be the first to cross the finish line using speed, tactics, and strategy.

Ra2Yr Modern Warfare ModCommand & Conquer: Yuri's Revenge (2001)
Ra2Yr Modern Warfare Mod for Yuri's Revenge, which places special emphasis on realism and modern weapons.

DOOM 64: Unseen Evil Ultra NightmareDoom (1993)
A brand-new difficulty created based on the Ultra Nightmare difficulty and ported for the Doom 64: Unseen Evil! mod.

Half-Life: Zombie Edition 25th Anniversary PatchHalf-Life (1998)
A patch that modernizes Half-Life: Zombie Edition adds a new menu and a loading screen based on new Half-Life 25th Anniversary GUI features, such as an HD background and an animated logo.

