X-Com: Terror from the Deep
X-Com: Terror from the Deep plunges you into a cold, dark war beneath the ocean surface. As commander of the newly formed aquatic division, you'll direct submarines, manage a sprawling underwater base, and deploy your soldiers on harrowing missions against a terrifying alien intelligence. The stakes are global, as the enemy's insidious influence spreads from the abyss to coastal cities, and only your strategic choices can turn the tide. The game layers intense tactical combat with a deep research and engineering system. Each alien encounter drops technology that your scientists can reverse-engineer, from improved weapons to advanced submersibles. Every decision—who to send on a mission, what to research next, where to expand—carries weight. The oppressive atmosphere, unforgiving difficulty, and haunting soundtrack create an experience that remains a benchmark for sci-fi strategy, demanding careful management and nerves of steel to survive the depths.
WaffleMath
Common Core State Standards
Every game supports specific Common Core standards. Browse the full standards library.
Practice by Skill
Games by Grade
What is X-Com: Terror from the Deep
Take charge of Earth's final line of defense in X-Com: Terror from the Deep, a legendary strategy title that pits humanity against an alien force rising from the ocean floor.
How to Play
You'll alternate between managing your underwater base—researching alien tech, building facilities, and equipping your troops—and directing your squad in turn-based missions. Click to move and fire, cover your team, and make every shot count, because resources and lives are precious.
Tips for Playing
- Keep a reserve of smoke grenades to block alien sightlines and protect advancing troops.
- Prioritize capturing alien leaders alive; their interrogation unlocks critical technology.
- Always equip divers with a mix of long-range and heavy weapons to handle various threats.
- Save early in missions; unexpected alien reinforcements can turn the tide quickly.
- Invest in sonar improvements early to expand your detection range and track alien subs.
Frequently Asked Questions
Is X-Com: Terror from the Deep the same as the original X-Com?
No, it's a standalone sequel that shifts the setting to underwater environments. The core tactical and strategic gameplay remains similar but adds new challenges and alien enemies.
How difficult is the game compared to other strategy titles?
It's known for being particularly brutal, especially in the early game. Expect tough alien encounters and limited resources, demanding careful planning and a readiness to lose soldiers.
Can I play this game on modern computers?
Yes, it runs in your web browser without needing any installation, so it's accessible on modern systems and operating systems.
What's the main objective in each mission?
Most missions require you to eliminate all alien units on the map, though some involve rescuing civilians or retrieving items. Completing objectives yields valuable salvage and intel.
Are there multiple endings to the game?
The game has a single campaign with a set finale, but how you approach the war shapes your experience. Your strategic choices can influence which final missions you face.
Do I need to manage resources like money and crew?
Yes, you must balance your budget, allocate funds for research, hiring new soldiers, building base modules, and producing equipment. Poor resource management will lead to defeat.
Related Strategy Defense Games
End of War
Orion XCOM
OpenXcom Extended
World Battle of the Future
Battle Flips
Age of Heroes
Battle Of Pigs
Braveland Heroes
Dangeon Tactics: Bones
Eternal Fury II
Galactic Strategist
League of Space Monsters
Legion Monsters
Lords of the Arena
Master of Orion
Red Sector
Robots Russian
Sci-Fi Tower Defense Module TD