Dropped a few hours in last night and I'm really digging it so far. Didn't even realize there's a separate Contracts mode outside of the Campaign missions. In Contracts you design & sell blueprints to fit specific client needs, and use the cash to get new machine types and expand your business. Has a lite-RPG vibe to it.
The 3-star ranking system feels well tuned for each campaign mission. It's one of those deals where if you're a completionist, you're really gonna have to think through your production chain. Most star ratings follow the same pattern of minimum completed orders, power usage under x Wh, and minimum ingredients used. You also have a custom spending cap for each level that keeps you in check for working with what you've got to earn those 3 stars.
Quibble complaints are no key remapping, which the dev said is the first-priority for upcoming patch. I personally think the default keys are just fine, but I can see where some might be bothered.
A larger issue for me is that I'd like to see hotkey implementation for favorited parts. Dispensers, robotic arms (dumb), and conveners are simply essentials that come up time and again along your production chain construction phase. I'd like to quickly queue them up when I'm brainstorming puzzle solutions.
So yeah, overall this game is well ace. Really surprised the base price is only $15 for all you get, both content and production-wise.
Some more stuff for you mate. You really must be happy with so many tycoons!