in fact there is one(still in progress,not released)at
https://steamcommunity.com/sharedfiles/filedetails/?id=1393148010
use map 5_thdots_melee will works

it's still in progress and have bugs(maybe) and something imperfect

rule is to capture the watch towers to earn extra gold/exp(every 5 min)
and killed roshan will drop a sword(will drop on dead)
the team which keep the sword at last(300sec after roshan dead) will win
I suggest play with 12+ people with 3+ teams

people says map is too big,and not enough people(24) play it xd
I'm trying to make a smaller map and improve other things
maybe will also make some new play styles :p

released:
https://steamcommunity.com/sharedfiles/filedetails/?id=2204533815&searchtext=thd