This is mainly the forum for Screeps:World (The MMO/sandbox ver) currently alpha feedback/bugs have been posted on the Steam forums for the game: https://steamcommunity.com/app/1137320/discussions It shouldn't have a capacity, on the docs that's intended to show that it has a storage capacity of 2000, not that it has a property named capacity. All storage related things are done though .store https://steamcommunity.com/sharedfiles/filedetails/?id=2505541950 To get a capacity code-wise you'd use getCapcity(RESOURCE_CONSTANT) off of store. Normally containers are considered neutral objects (though in Arena they seem to extend off an owned structure) so my should be false, and they as far as I know, should have hits.