TD3D

In a 3D environment, in addition to stopping the enemy from advancing, you may also have to stop the enemy from rising or falling!
You can use towers to block the enemy, but after the enemy gradually becomes stronger, it is better to build the tower on the roadside or wall.
Whether you choose to use low-level but massive towers to destroy the enemy, or use high-level and powerful towers to destroy the enemy, as long as you can stop the enemy, it is an excellent tactic!
In addition to powerful monsters, you also have to pay attention to small and fast-moving critters, but as long as you use towers that attack with a wide range, you don't have to worry!
If you are still not satisfied, use the talent tree to strengthen your tower to an incredible level and make those guys despair!
Next time, you have to be careful of them, they are attacking from all directions...

Game features:
There are nine levels, and each level has different route distances. Enemies will spawn from the farthest end at the beginning, and will only take the shortest route, starting from the green ball and ending at the red ball.
There are three types of towers, long-range single attack, long-range group attack, and close-range group attack.
Each has three directions for advancement, and each has three directions for strengthening after advancement. There may be different abilities after advancement.
Enemies are big and small, fast and slow, and each wave is stronger than the last. Be careful of fast-moving small animals.
The enemy may walk on the wall, and you can also build the tower on the wall. Also note that ordinary bullets cannot penetrate the wall.