Broken for me in Firefox, Chromium and Chrome on Linux. I was stoked to play. I didn't know there was a part three. I've played the other two thousands of times. A real bummer.
The best I can get is in Chrome the game will load, but after clicking "Play muted" I just get the intro screen with the floating title, and nothing ever happens. Clicking the gear gets me the options screen, but the "done" button is broken until I go to "more options," then the "done" button will work. After leaving the options menu, everything is frozen and you can't interact with anything.
I would have sent this to the developer directly, but his last activity was October 2019.
OK, something crazy just happened. I bought Kreds and time-warped three times. I bought businesses, and reset to get angels. I left the page and came back, and the game started where it had been before I time-warped. I lost everything I gained in those warps. That's pretty annoying, since I spent money to do that.
Watch out if you time-warp. Export your game in case it screws up on you the way it did on me.
It's nice to see developers who are so active and responsive. I'm going to second the request for mouse wheel scrolling, although I know that can be a pain in the rear with games that run in browsers.