Instead we started work on X-COM: Apocalypse, which was much more ambitious. We said that this was not feasible, and if it were possible it would be little more than the same game with different graphics. Several of the races have some source in Lovecraft's Cthulhu Mythos, and their main base (the mothership into the Sigsbee Deep) is named T'Leth, a reference to R'lyeh, a submerged alien city from Lovecraft's short story ' The Call of Cthulhu' ( Cthulhu itself is also referenced there in the form of the chief alien in The Tomb room which is the game's final objective).Īccording to Mythos Games, developers of UFO: Enemy Unknown: 'After completing UFO, MicroProse wanted to do a quick follow up within six months. Many of the races from Enemy Unknown parallel these races, and some are supposed to have common ancestors.

The aquatic aliens came to Earth on a large ship that crashed into the ocean 65 million years ago and supposedly caused the extinction of the dinosaurs. Each race has various strengths and weaknesses, and some races are dependent on other races. The game has eleven fictional races of alien beings. Lovecraft, including the appearance of the Deep Ones (one of the alien races, the Tentaculats, is even described in-game as 'not even the depths of a Lovecraftian nightmare could spawn such as this indescribable creature' ). While the aliens and overall atmosphere of the original game was influenced by extraterrestrial life in popular culture, TFTD has a darker theme influenced by the works of H.P. Resource management is also present, as the player must hire and dismiss staff, buy and sell vehicles, weaponry, ammunition and items, and build and expand bases. Underwater battles use the same physics as the ground ones, even as many of the underwater weapons can be used on ground. The BattleScape is used for combat between squads of aliens and humans, and takes the form of a turn-based battle from an isometric view.

Here the player views alien and X-COM craft. The first is the GeoScape, a global view of Earth. However, the difficulty level has been substantially raised and there are a number of new features. The only time the game moves onto dry land is for terror site missions (when the aliens attack a port, ship, or island). Terror from the Deep plays out underwater, with base-building and combat all being submerged beneath the waves. Terror from the Deep is set in 2040, decades after the first Alien War was won, when a mysterious new alien menace begins to emerge from the Earth's own oceans.

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