Well, you can inherit in Lua, right? In http://lua-users.org/wiki/InheritanceTutorial http://lua-users.org/wiki/InheritanceTutorial it's just setmetatable

Well, you can inherit in Lua, right? In http://lua-users.org/wiki/InheritanceTutorial http://lua-users.org/wiki/InheritanceTutorial it's just setmetatable(new_class, {__index = base_class}) because __index can be a table; it doesn't have to be a function. I've never tried Roblox, so I have no idea how often people do such things in it.