Making a simple 2D tower defense game in Godot/C#

Let’s make a basic game prototype step-by-step!

Tower defense games are a popular genre on the Internet. The mechanics are fairly simple to apprehend, you can transpose them in many universes and the gameplay often gives players a real feel of progression and power.

But, guess what? They’re actually not that hard to create! So, today, in this Godot/C# tutorial, we’re going to see how to implement the basic mechanics of a 2D tower defense game :)

This tutorial is available in video or text format — see below for the text version :)

Check out the Github repo with all my Godot tutorials! 🚀

🎮 A demo of the game

By the end of the tutorial, our little prototype will look like this:

We’ll have pirate ships that follow a given path and try to escape our cannons to attack the nearest town. So it’s our job to place some additional defences to stop them…

Basically, if we have enough coins, we’ll be able to pass in build mode and place some new towers on any ground tile. Then, those towers will have a given field of vision and, whenever a ship enters this circle, it will be designated as the new target for the tower. The building will then fire some cannon balls in the direction of the ship at a regular rate.

In this tutorial, we will keep things simple on the data side and only consider one type of tower, one type of enemy ship, and some pre-determined parameters for the attack range, the attack rate, the HP and so on, that we’ll define directly in our script.

Note: in a real game, however, you’d probably want to extract this data to external files to make it easier to change and tune ;)