FYI: google might suspend and eventually delete your Google account if you don’t verify your age within a set period of time.

They say it’s to “prevent minors from having access to an account that isn’t monitored by parents”.

Seems more like unecessary corpo powertripping, to me.

(If you decide to go through with the age verification: the credit card method is probably the least invasive. Just be sure to unlink your card from the account afterwards.)

In settings for CDDA and bright nights: you can configure the time frame for zombie evolution, so you can fix the pacing pretty easily.

The Rebuild series by Northway Games has this exact premise. Rebuild 1 and 2 are made using flash, while Rebuild 3 is available on steam.