
盟军远征: 地下世界
Valhalla's sealed abyss unleashed dark hordes during a magical cataclysm. United surface races repelled the invasion but now venture into the unfathomable pit to confront ancient evils and uncover truths buried beneath their war-torn world.
Offers
What are keyshops?Official stores
Official stores with direct support.
About 盟军远征: 地下世界
Explore the unknown world and unlock the forgotten history. "Underworld: Allied Expedition" combines tower defense, collection, unlocking, strategic deployment and other gameplay elements. Based on a fast-paced experience and the "rushing troops" gameplay style, it will bring you a brand-new experience.
Hero
Among the first 12 heroes to be unlocked, there is Ethan, who is proficient in long-range shooting; Chris, who upholds a heart of justice; Liam, who lurks in the shadows and delivers a fatal blow to the enemies; and Frank, who excels in the magic of potent potions. Each hero has its own unique characteristics. When paired with another hero, the combined effects will far exceed your imagination.

Troop
The Shield-Warriors who are adept at parrying are suitable for taking the frontline position. The Archer, making use of their advantage in range, are well-suited for dealing killing blows from the rear. The Axe-Warrior, before whose mighty axes no one can survive, are the absolute top choice when facing heroes with high armor. The Artilleryman, capable of dealing area-of-effect damage, can leave almost no survivors under their AOE attacks when facing a large number of enemies. Combinations of different troop types, the speed of summoning them in sequence, the selection of routes, and so on, will all have an impact on the final victory.

Training
Training your heroes and troops, and choose the appropriate direction for improvement.
Building
Analyze the situation of the map and construct suitable buildings on the limited land, which can greatly increase the chances of winning.
Runes
Before entering the battle, matching the appropriate runes may determine the course of the battle.
Album
When the ancient history is erased by a powerful force, if you want to learn the truth of history, then go and collect. When you have gathered the complete steles, perhaps the ancient gods can be brought back to life.
Game details
Game details
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盟军远征: 地下世界 price history
Lowest tracked price: £3.21 (Jul 15, 2026) · current best: £3.21.
盟军远征: 地下世界 reviews
67% positive reviews all-time.
盟军远征: 地下世界 — frequently asked questions
Where can I buy 盟军远征: 地下世界 at the cheapest price?
Right now the cheapest offer for 盟军远征: 地下世界 is £3.21 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price 盟军远征: 地下世界 has ever been?
The lowest price KingsPrice has tracked for 盟军远征: 地下世界 is £3.21 (recorded on Jul 15, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
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System requirements
Minimum
- OS *: Windows 7
- Processor: i5-3570K
- Memory: 800 MB RAM
- Graphics: GTX 560
- Storage: 1 GB available space
Recommended
- OS: Windows 10
- Processor: i7 7700k
- Memory: 800 MB RAM
- Graphics: GTX 1060
- Storage: 1 GB available space












