There are a number of copyright issues related to the choreography of an eSports game. In these days the first (and most important) regards the protection of choreographic elements (i.e. a dance) which could appear in videogames. In Europe and in the USA, a choreographic work is protected by copyright. This is why an extended series of dances moves that is original to its creator can be protected by copyright. The above explains the law suits recently filed in the USA at the end of 2018 by several individuals in connection with famous Fortnite videogame.
If you are not familiar with Fortnite, players can buy (or earn) emotes, short avatar animations who can replicate generic acrobatic moves and dances. The Fortnite Loser Dance (so called L Dance) become famous thanks to the French soccer player Griezmann, who used this theme after scoring in the last World Cup 2018 final against Croatia.