Hi! I used the Godot Game Engine. It's a really cool free open-source project, that has some very impressive capabilities! Here's a link to the project's website, if you want to take a better look at it: https://godotengine.org/
P. S. : Sorry for taking so long to reply, I just didn't have a lot of time to open itch. Thanks for the comment, and hope this is still helpful to you. Cheers!