I'm a big fan of factory games so I can only praise you for making such game.
However multiple points didn't allow me to really get into it:
- the role of each building is not that easy to keep in mind. Having a visual key instead of a text description might help,
- the rythm is kinda weird: sometimes I spend minutes waiting for money, others I have to both fight and build. I feel this comes from (hidden) cost when fighting!
- the defending mode is not well integrated in the game: graphics are different, there is no tutorial, rules of fighting are not explicit (defense depends on money but also has a rate limit ?)
In conclusion: liked the idea, loved the building mode, disliked the defense mode 😬