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.