Do you create new .lua files for each level?
Corona SDK uses the Composer API to allow you to easily switch between different levels/scenes:
http://docs.coronalabs.com/api/library/composer/index.html
It uses a .lua file as a level and allows you to quickly and easily change between scenes.
Here is a good tutorial and file template from the Corona Labs Blog:
https://coronalabs.com/blog/2014/01/21/introducing-the-composer-api-plus-tutorial/
If you are looking for a way to rapidly create levels, you can try something like Dusk:
Corona SDK uses the Composer API to allow you to easily switch between different levels/scenes:
http://docs.coronalabs.com/api/library/composer/index.html
It uses a .lua file as a level and allows you to quickly and easily change between scenes.
Here is a good tutorial and file template from the Corona Labs Blog:
https://coronalabs.com/blog/2014/01/21/introducing-the-composer-api-plus-tutorial/
If you are looking for a way to rapidly create levels, you can try something like Dusk: