I've added walls to the ends of the levels, so you can no longer go out of level.
They are only temporary though; up until I add in the actual spawners and program their mechanics.

I have also added in Miners being able to mine at night if the Mine is inside your walls, and a new upgrade for them using your OVERCLOCK module. (The beginning module is the OVERCLOCK module)

And I have balanced the game a little more. It still needs a lot of work, and will constantly change with the added mechanics that will change both how you will fight and money management, but it is much easier to survive for 4+ days. 

I also changed the Turrets some. I added both a new look with each upgrade, and each upgrade has more impact by increasing the range and firerate.

I hope y'all enjoy the changes so far! More to come and more to see, so I do look forward to y'all seeing the newer things and newer ideas that dffer more from the inspirations for this game!