2. Kingdom Building:
- Before starting a battle, you need to build and upgrade your kingdom. Tap on the "Kingdom" button to access the kingdom building screen.
- Here, you can construct and upgrade various buildings such as gold mines, barracks, and magic towers. Each building provides unique benefits and upgrades will increase their effectiveness.
- Use your resources wisely and prioritize upgrading buildings that generate income or enhance your tower defenses.

3. Tower Defense:
- Tap on the "Battle" button to enter the tower defense mode. Here, you will face waves of enemies that will try to breach your defenses.
- Start by placing your towers on the available slots. Initially, you will have basic towers that can be upgraded later.
- Each tower has unique abilities and strengths, so experiment with different combinations to find the most effective strategy. Some towers may be better against flying enemies, while others excel against ground units.
- As you progress, you will unlock more advanced towers with stronger abilities. Merge towers of the same type to create more powerful versions that can deal with tougher enemies.

4. Merging Towers:
- The merging mechanic is a key aspect of Merge Kingdoms - Tower Defense. To merge towers, simply drag and drop two towers of the same type onto each other.
- Merging towers will create a more powerful tower with increased damage and range. Additionally, merged towers may gain additional abilities or special effects.
- Be strategic with tower merging. Try to merge towers of the same level to maximize their potential. However, keep in mind that merging towers will cost resources, so make sure to have enough before merging.

5. Defending Your Kingdom:
- As enemies approach, your towers will automatically attack them. However, you can also tap on individual towers to unleash special abilities or target specific enemies.
- Pay attention to the enemy types and adjust your tower placements accordingly. For example, flying enemies may require anti-air towers, while armored enemies may need explosive towers.
- Use your spells wisely. Spells can deal heavy damage to enemies or provide temporary advantages to your towers. Save them for tough situations or when facing large groups of enemies.

6. Upgrades and Rewards:
- As you progress through the game and complete battles, you will earn experience points and rewards. Use these rewards to purchase upgrades for your towers, spells, and kingdom buildings.
- Upgrades will increase the effectiveness of your defenses, allowing you to tackle more challenging levels.
- There are also daily rewards and achievements to complete, which provide additional bonuses and resources.

7. Multiplayer Battles:
- Merge Kingdoms - Tower Defense also offers multiplayer battles where you can compete against other players in real-time.
- Join or create a guild to team up with other players and participate in guild wars for even greater rewards.
- Test your defenses against other players' kingdoms and climb the leaderboard to prove yourself as the ultimate defender.

8. Tips and Strategies:
- Focus on upgrading your income-generating buildings early on to ensure a steady flow of resources.
- Experiment with different tower combinations and strategies to find the most effective way to defend your kingdom.
- Pay attention to the battlefield layout and take advantage of bottlenecks and chokepoints to maximize your tower efficiency.
- Keep an eye on your tower's range and adjust their positions accordingly. Placing them too far apart may leave gaps in your defenses.
- Save your spells for tougher situations or when multiple enemies are on the screen at once.

Merge Kingdoms - Tower Defense is a challenging and addictive tower defense game that offers endless hours of fun and strategic gameplay. With its stunning graphics, intuitive controls, and deep upgrade system, it is sure to captivate both casual and hardcore gamers. Follow the strategies and tips provided in this walkthrough to become a master defender of your kingdom and conquer all your enemies!