Plot: Massive Chalice is a turn-based strategy video game for Microsoft Windows, OS X, Linux and Xbox One by Double Fine Productions, which was funded through Kickstarter. The project leader of the game is Brad Muir, who was previously the project leader of Iron Brigade. Wikipedia
Plot: XCOM 2: War of the Chosen is an expansion pack for the 2016 turn-based tactics video game XCOM 2, released for Windows on August 29, 2017. Versions for macOS and Linux were released on August 31, 2017, and a Nintendo Switch port was released on May 29, 2020. Wikipedia
Plot: The Bureau: XCOM Declassified is a 2013 tactical third-person shooter video game. It was developed by 2K Marin and published by 2K Games. Wikipedia
Plot: X-COM: Terror from the Deep is a strategy video game developed and published by MicroProse for the PC in 1995 and for the PlayStation in 1996. It is a sequel to UFO: Enemy Unknown and the second game of the X-COM series, this time taking the war against a renewed alien invasion into the Earth's oceans...
Plot: X-COM: Apocalypse is a 1997 science fiction turn-based tactical strategy game. It is the third game in the X-COM video game series. It was developed by Mythos Games, and published by MicroProse in 1997 for MS-DOS and Microsoft Windows. Wikipedia