Here is a video showing the first wave of Shapes TD

It features some of the sound effects I've sourced as well.
I've implemented two major functions into the game.  It's now a functioning game.
There is a stage manager, which loads all the models before a given stage begins
And there is a wave manager which determines whether a new shape needs to spawn for a given wave, and if the shape has already spawned what actions it should take.
As well as a tower manager which handles tower targeting and tower animations.

I'll post a code update by the weekend.