Six turn-based alien invasions: the three MicroProse originals and Firaxis's reboot with its expansion.
One city, two alien factions and a real-time mode; the last X-COM the original team made.
Three named alien hunters who remember your fights, plus three resistance factions to answer them.
The underwater sequel, harder than the original in every way.
Earth lost; run a resistance from a flying base with timed missions.
Firaxis reboots X-COM with 95% shots that miss; the turn-based tactics revival.
Base building, research and squads that die in the dark; the 1994 original of the tactics genre.
Infobox
