It's a nice game and I like the visuals (especially the missile explosions look cool). However it is very easy to break the balance quickly, it only took a minute or so for me to reach a point where it was fully hands-off... I'm not sure if there is an ending, but I played until almost 500k cash on hand
Also I'm not sure if there is a way to remove turrets/factories after placing them, but if not there definitely should be tbh. It's very possible to put yourself into a horrible position by, for example, placing too many factories down in the first 30 seconds haha