Tron at beach

https://twitter.com/regisRquoi/status/1022901518670938114🌞🌊⛱️

Draw a line around your opponent.
You can't cross a line.
Lines from last rounds can be used.

Variants:

-You can only draw with one foot, you can't take it out from the sand.
-You can erase a line by cleaning the sand with your foot.
-Any amount of player is a good amount of player: players get eliminated as they cross lines. Last player in game wins.
-Don't play in the sand, play with paint instead.