LÖVE

Not yet.

Remember that "alive" is not a shared property, each instance must have his own "alive" property.
Take a closer look at my previous post.

And inside your love.keypressed lies a chaos...lol.
Please explain clearly what you really aim to do with these multiple balls.

At the moment I just want to be able to place unlimited amounts of balls by left clicking. That will then lead be on to be able to understand how to create enemies and other things which there are multiple of.