Press "See Inside" and make sure you are on the code for the only sprite. Delete the script with a comment on it, and then backpack the sprite. Finally, put it in your game and you are done! Use the "Make a block" block to create particles.
This is what I've been using and will continue using for my games, as particles just make everything look sick. If you have questions, ask me in the comments. The explosion is just a small example of what you can do :)
