Can you play MC for free?

Could you kindly provide me with some clarity on this matter? I'm rather perplexed about whether or not it's possible to engage in MC without having to pay any fees. Is there perhaps a version or a platform where MC can be enjoyed without any monetary commitment? It would be greatly appreciated if you could shed some light on this inquiry, as I'm quite interested in exploring this realm but am hesitant due to potential costs. Thank you in advance for your assistance.