XCOM Alliance - Official Trailer (2000, Microprose) VAPOURWARE
4X-COM: Alliance was a cancelled video game in the science fiction series X-COM. The game was developed by three different teams of MicroProse developers (first as a subsidiary of Spectrum Holobyte, then Hasbro Interactive, and finally Infogrames Entertainment) between 1995 and 2002. Its initial working title was X-COM 4 (later X-COM 5); the project was code-named Fox Force Five to stop media leaks. The game had the player assume the role of commander of the militarized scientific mission lost in space during the aftermath of X-COM: Terror from the Deep.
Unlike other games in the X-COM series, most of which were strategy games, Alliance was a first-person shooter. It was described as having "strategy, adventure, and RPG elements too." After being officially announced in 1998 for a planned release in the first half of 1999, this highly anticipated game was repeatedly delayed and put on hold, before eventually becoming vaporware since 2002.
The game takes place in the year 2062 (22 years after the events of X-COM: Terror from the Deep and five years before X-COM: Interceptor), when the research vessel UGS Patton, with a crew of top scientists and engineers and team of X-COM soldiers, travels to a site of the former alien base at Cydonia on the surface of Mars to retrieve alien artifacts and establish an Elerium mining facility. However, the Patton goes through an unexpected dimensional wormhole gateway and ends up stranded 60 light years from Earth, finding the alien invaders from UFO: Enemy Unknown to be engaged in a war with a new alien race, the Ascidians. The crew of the Patton joins forces with the Ascidians, and the alliance gives the game its name. Eight other new alien races were going to be introduced too.
Truly a shame this game never came out.