Is X-COM: Terror from the Deep harder than UFO Defense?

Yes, it is generally considered significantly harder. Aliens are often more powerful, there are more challenging environments (especially underwater), and resources can be scarcer.

Does Terror from the Deep have permadeath?

Absolutely. Soldiers who die in tactical combat are gone forever, making every mission a high-stakes endeavor.

Can I play Terror from the Deep on modern systems?

While originally a DOS game, Terror from the Deep is available digitally on platforms like Steam and GOG, often bundled with DOSBox to ensure compatibility with modern operating systems.

What's the best way to deal with the Aquatoids?

Aquatoids are nimble and use plasma weapons. Focus fire on them, use cover, and try to engage them at range. Stun bombs can be effective for capturing them.

Is there multiplayer in X-COM: Terror from the Deep?

No, X-COM: Terror from the Deep is a single-player experience only, focusing on the strategic and tactical campaign against the alien threat.

X-COM: Terror from the Deep

In short: X-COM: Terror from the Deep is a strategy game released in 1995 by Mythos Games, available on PC. Our score: 8.0/10 (worth buying, especially on sale).

A turn-based tactical game where players control a squad of soldiers fighting alien monsters. It's known for its challenging gameplay and permadeath mechanics.

X-COM: Terror from the Deep is a turn-based tactical strategy game developed by Mythos Games and published by MicroProse in 1995. It serves as a direct sequel to the critically acclaimed X-COM: UFO Defense (also known as UFO: Enemy Unknown). The game shifts the conflict from outer space to the depths of Earth's oceans, where a new alien threat has emerged from sunken cities and mysterious abyssal trenches. Players once again assume the role of commander of the X-COM organization, tasked with defending humanity from an aquatic alien invasion. The core gameplay loop of Terror from the Deep remains faithful to its predecessor, blending strategic global management with intense tactical combat. On the geoscape, players manage their bases, research new technologies, manufacture advanced weapons and armor, intercept alien incursions with their own fleet of submarines, and deploy their elite squads for tactical missions. The research tree is extensive, requiring players to capture alien artifacts and live specimens to reverse-engineer their technology, a key element for progressing and developing more powerful defenses and offenses. The tactical combat missions are where Terror from the Deep truly shines and frustrates in equal measure. These missions are turn-based, taking place on a variety of procedurally generated underwater and onboard alien vessel maps. Players control a squad of up to 14 soldiers, each with individual stats, equipment, and experience. The permadeath mechanic…

Game details

Developer: Mythos Games
Publisher: MicroProse
Release year: 1995
Platforms: PC
Category: strategy

Our review

X-COM: Terror from the Deep takes the beloved formula of its predecessor and plunges it into the terrifying depths of the ocean. While it largely reuses many assets and mechanics, the new setting and significantly ramped-up difficulty create a fresh, albeit brutal, experience. The strategic layer remains engaging, with base management, research, and interception missions demanding careful planning. However, it's the tactical combat that truly defines the game, with its unforgiving permadeath, diverse alien threats, and intricate maps. Graphics, while dated, still manage to convey the murky, oppressive underwater atmosphere. The story, while a simple 'aliens invade again' premise, is elevated by the unique aquatic theme and Lovecraftian creature designs. The sheer challenge and depth offer immense replayability and value for strategy enthusiasts, making it a cult classic that continues to test players to this day.

Pros

Deep and challenging turn-based tactical combat
Engaging strategic layer with base management and research
Unique and atmospheric underwater setting
High replayability due to permadeath and varied missions
Lovecraftian alien designs

Cons

Extremely high difficulty curve, can be frustrating for newcomers
Graphics are very dated
Recycling of assets and mechanics from the previous game
Can feel unfair at times due to RNG

FAQ

Is X-COM: Terror from the Deep harder than UFO Defense?: Yes, it is generally considered significantly harder. Aliens are often more powerful, there are more challenging environments (especially underwater), and resources can be scarcer.
Does Terror from the Deep have permadeath?: Absolutely. Soldiers who die in tactical combat are gone forever, making every mission a high-stakes endeavor.
Can I play Terror from the Deep on modern systems?: While originally a DOS game, Terror from the Deep is available digitally on platforms like Steam and GOG, often bundled with DOSBox to ensure compatibility with modern operating systems.
What's the best way to deal with the Aquatoids?: Aquatoids are nimble and use plasma weapons. Focus fire on them, use cover, and try to engage them at range. Stun bombs can be effective for capturing them.
Is there multiplayer in X-COM: Terror from the Deep?: No, X-COM: Terror from the Deep is a single-player experience only, focusing on the strategic and tactical campaign against the alien threat.

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Last updated: 03/04/2026