And you say I'm stalking you...
No, he's just being a post whore.
Anyway, there are quite a few games similar to AoT, but none exactly like it.
Weapons like the sword, bow and grappling hook are similar to those found on AoT. And vehicles such as the horse are as well. Anyone can make a similar server to it using those things, a few events, some bots and a couple buildings.
I'd suggest looking for servers named MedievalRP, but other servers might be similar as well.