The official website is 1v1.lol . yexexgithub.io is an independent, unverified third-party site.
: Just like in Fortnite, holding the high ground gives you a better line of sight and forces your opponent to use more materials to reach you. yexexgithubio 1v1 lol full
Common rule set (widely used for fair 1v1s): The official website is 1v1