I play "Crossout" on steam with a computer sometimes. In this game you can create or modify a vehicle with guns to combat against other players online. It is road rage shooter game where you can design their own tank, car, robot, hovercraft, etc. There is a chat option also which is a popular feature.
Anyway there is a leviathon option where you can create an even bigger vehicle with more weapons that will fight automatically, even if you are offline. So I created a build and put a large mango tree on top of it. The mangos are made out of balloons. It is pretty effective because it has about 10 cannons also.
I told the people on chat that if my levi kills them they have to plant a mango seed, but I have no way to enforce this rule.