I found the problem - there should be no "=" in this part of line 222: shaft.workers.length <= shaft.max_workers

i'll update it on the website tomorrow. thanks for catching that! Somehow I hadn't tested clicking an invisible button...

thanks!

i see on the screenshot you have a lot of cash, maybe buy a faster processor? ;-)

congrats!

we have to go deeper

i'm relieved to see that zombies are willing to perform the same slave labor as humans :-)

thanks for letting me know! i'll have to fix it when i get a chance.