u/DoDoo04

Hey everyone! I just reached C31 and was wondering roughly how long it takes to get to C35. I'd also love to hear any tips or tricks for upgrading as efficiently as possible!

I'm mostly F2P, with occasional spending of around £1–£5 here and there. I have a 4★ Builder Set, and I've upgraded all my cost-reduction heroes to +5. I also have a few farms that I actively take part in events with.

Any advice would be greatly appreciated!