X-COM: UFO Defense

X-COM: UFO Defense is a 1994 turn-based tactics and strategy game developed by Mythos Games and published by MicroProse. Set in the near future, the player commands the Extraterrestrial Combat Unit (X-COM), a secret international organization tasked with defending Earth from an alien invasion. The game seamlessly blends two layers: a global strategic layer where the player manages bases, research, manufacturing, and interceptor aircraft, and a tactical layer where squads of soldiers engage in turn-based combat against alien forces across diverse environments, including crash sites, terror missions, and alien bases. Missions use an isometric view with fully destructible terrain and lighting effects. Soldiers' stats improve based on their actions, creating attachment and high stakes. The game's rich research tree, deep economy, and procedurally generated missions give it immense replayability. Widely regarded as one of the greatest video games of all time, X-COM: UFO Defense defined the genre and spawned a franchise, though later sequels struggled to recapture its magic.