Realm Defense: Hero Legends TD is a tower-defense-based strategy game offered by Babeltime US. It has more than five million downloads on the Play Store. Choose your heroes, build towers, upgrade the defense, use spells & power items, stop the hordes of enemies and defend your kingdom
Story

The evil lord of the undead is resurrected after a long time. He gathers his forces to attack the kingdom. Some of his strong commanders already attacked the kingdom and pushed their backs to the walls. But thanks to the Mighty Guardians of the kingdom, Red Dragon & Guardian Golem, they were able to conquer them & save the kingdom. But the threat is not over yet. They will attack again with more enemies. Everything is in your hands now. Defend the kingdom.
Gameplay

It’s a tower-based strategy game. It has more than 300 levels. In a level, there will be a predefined path and predefined places to build the towers. Enemies will try to enter your base in multiple waves. You have to stop them by building the towers like archer towers, cannons, barracks, etc. Killing the enemies gives you gold. Use the gold to build new towers or to increase their level.
When a wave is over, the next wave will take some time to start. In that time, you can decide your strategy or give time to your heroes and units to recover HP. You can also start the wave immediately. It will give you extra gold too. To clear the level, stop & kill them from entering the base. If 20 enemies enter your base, you will lose. You can upgrade the towers, use spells & power items, and heroes to kill them.
Based on your performance, you will get stars on clearing the level. You can get up to 3 stars in a level. These stars are required to upgrade the towers that increase their base damage or add new effects.
Game Modes
Campaign

In the campaign mode, there are 8 locations and 300+ levels. You will go through the story of defeating the undead lord and his followers. On reaching certain levels, new heroes also unlock to buy. As you proceed to the higher levels, the difficulty of levels keeps increasing.
Endless Mode

In this mode, there will be endless waves of enemies. You can play it as long as you can defend the base. The longer you play, the more items you will get. To make it more interesting, tournaments are held in this mode. You will be placed in leagues based on your performance. And when the tournaments are over, you will get medals that you can use to buy heroes.