As part of the Corona Defold Jam I took the marketplace Star Explorer project and changed it quite a bit to make Asteroid Blasteroid. I documented the process in the game dev log and also released the modified project as open source on GitHub here: https://github.com/prairiewest/Asteroid-Blaster
Of possible interest to you, there are 5 different control schemes for the game: 3 for mobile and 2 for desktop. I modified these multiple times after lots of play testing, but if you think there are improvements to be made I'm interested in hearing your thoughts.
Please take the time to check out as many games in the game jam as you have time, all of us developers are happy when people play the games!