Honestly I am really not a fan of the overpixelization to the point that it becomes hard to read, especially when you have a game that needs to be understood a bit. Your game asks a form of patience from the user by requiring the understanding of rules and mechanics, and your main method of transfer is text. I would highly discourage using less-readable fonts.
That being said, It is fun. I'm having fun. I feel like picking the right upgrade allows me to cheat the system and I'm looking for synergies, which is what these games are all about. Well done, highly enjoyable.