So I've found the most addicting game that exists on the internet. No, seriously

Do you know if there’s an “undo” option for this game ?

The number of times i’ve accidentally sold things instead of buying them … !!

You can hit refresh on your browser (F5). It will go back to the last save. Saves are automatically done once a minute, so the refresh may be good or bad depending.

Ah, thanks !
I’ll try to remember that, although i have decided i’m not
going to sell anything anymore. It’s really not worth it (and
it sorely upsets grandmas !).