As a user, I want to be able to correctly interact with the whole world
[ ] Stay sure, that 2(or more) players do not have intersection in their rights(ex. - have their own inventories and do not have access to inventories of eachover)
[ ] Stay sure, that world objects is placed in the same players for each player
[ ] Stay sure, that some game mechanics won't broke because of multiple use(ex. - casino)
[ ] Stay sure, that players can interact with each other(ex. - exchange some items with each other)
As a user, I want to be able to correctly interact with the whole world