The art and animations are nice, but the fun of a game this simple lives and dies on its balance, which isn't great here. With a single turret and only buying turret rate, you basically don't have any issues progressing. Even if it was better balanced, it would quickly get tiring anyway. With some different enemy types, unlockable kinds of turret, ability to replace buildings, more variety in the inter-universe buffs, and maybe a boss wave here and there, this could be really solid. Oh, and you can drag the health side-to-side, which I assume is a bug (but it doesn't seem to change the actual health value, at least).

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