By 'events' here I mean events, that a date-based and in which players can participate to earn some prizes. Also that events will have a fixed structure so it's kind of entity that lives in fixed period of time. Players logs in, trying to get that entity from server and if he gets it, in-game logic creates some inner level for him based on that entity data. For now I see the only way to add it manually as json to title data, but I believe there is better solution. Maybe with some automatisation to remove old events and activate new that are pending.