First of all - this is free. Just click the button already.

It's also the most expensive free game you'll play.

Not in terms of money - no. In terms of time. You'll find yourself laying awake at night thinking of ratios and connections and optimizing a new routine. You'll rush home and immediately turning on your monitor (you kept your PC on to collect a few more resources) just to continue expanding your factory.
Your portal will grow, your screaming desire for more production will over take all.
You will gleefully infect 8.71 * 10^48 computers just for a 5.89x boost to your CPU.
You will overclock your GPU with previously unknown technology just to generate a few extra AI Neurons.
You will assemble a non-sentient being just for a 5x boost to your coding prowess.
You will repeatedly hack Anonymous, major corporations, banks, and vulnerable governments just for a little more currency.
My friends have become concerned when I told them I have logged nearly 70 hours on steam in one weekend.
Take factorio, satisfactory, shapez, any factory builder on steam. Stir them in a pot, boil them down, strain out the suspicious white powder. Then snort it. That's this game.
Good luck.