You can now click on a soldierâ€™s rank insignia to access his skill ratings from the arming screen convenient when youâ€™re trying to decide who should get the best weapons or how much equipment each operative can carry. There are a few minor changes in Terror from the Deep, but even these arenâ€™t really improvements. It makes Terror a little more challenging than UFO Defense, but since equipping your ships and soldiers is one of the few tedious aspects of the game, it also makes it more frustrating. That means youâ€™ve got to be sure you have a wide variety of weapons, and that you choose the right ones at the beginning of each mission. Certain weapons in Terror, like the Hydro-Jet Cannon or the Torpedo Launcher, wonâ€™t work on land. The only real change in gameplay springs from the fact that youâ€™ll be fighting the aliens on land as well as under the sea. Hangars are Sub Pens, and Missile Defenses have become Torpedo Defenses. The Motion Sensor is now the Particle Disturbance Sensor. The Sectoid aliens are now the Aquatoid, in keeping with the gameâ€™s primarily undersea action. New graphics, sure, and some new names, but theyâ€™re just thin disguises for the same weapons, creatures and technology that appeared in X-COM. The twist - and it couldâ€™ve been a good one - is that this time around the aliens have traded in their UFOs for submarines and are attacking us from the worldâ€™s oceans.

You’re back in command of the Extraterrestrial Combat Unit, once again defending the earth from alien invaders. Some fans loved it, some hated it, but no one thought it superseded its predecessor. Gameplay-wise it was nearly identical to the first game (even including underwaterâ€¦ grenades?), albeit larger and, according to some, more difficult.

The sequel, Terror from the Deep, was set some decades after the first and took place mostly underwater or in coastal locales. The first X-COM game, UFO Defense, occurred on land. Despite the underwater shift, Terror feels more like a skin graft.

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