Game isn't really playable
Probably wasn't ready for release. Of course, it doesn't appear that devs have any feedback based on no reviews and no way to contact devs.
Save your time and play something else.
Response from developer
Thanks for your feedback! We’ve addressed these issues in version 1.4.1: You can now pause tiers, and we’ve balanced material consumption to reduce forced clicking. For future feedback or bug reports, please use the email button in the top navigation bar. We’d love it if you’d give the updated version a try and reconsider your rating!



