Beholder 3 does exist and is in beta tests. There was a public beta a while ago but it's closed now. https://beholder.cf/beholder3/ is an exact copy of the original site https://beholder-game.com/. It's possible that someone wants to send you the files they got when the test were open but this site is fishy considering that it's a copy of the original. .cf is a country code for Central Africa. Maybe it's the... Source: over 2 years ago

I might be wrong, but I don't think it's possible that you can have two towers share the same email. Your best bet would be to either get on the discord and ask there, or email support@ nimblebit.com so they can either tell you whether your second tower was registered, and perhaps give you a hint to the email that it's registered to. Source: about 2 years ago

Tiny Towers - This is one of the first games I've ever downloaded when I owned my very first smart phone. Although it has aged a lot, I still find myself going back to it just for old time's sake, and trying to collect as many establishments as I can. They even have a vegas version if you like playing casino games, like Slots, Poker, or Black Jack. And their newest one being Lego Towers. Source: over 2 years ago

Maybe their other games might suit you https://nimblebit.com. Source: over 2 years ago