need help remembering a minecraft server

here's what i remember about the server

u get supplies and you build giant walls to protect the players
u kill mobs and if u get killed u become a mob
mobs attack from the NESW directions
there's like a boss for the survivors at the end

that's all i remember plz help me u guys ;-; i miss playing on the server ill give a game to who finds the right server that i used to play 2-3 years ago