No one knows how many floors there are in the tower, at the moment the strongest players are only on the 121st floor. On each floor there are trials from intelligence tests to a simple victory over monster/s. There are no rules in the tower. The gods can observe the players and send them points or items. They also often write messages that players can see and comment on what is happening. They use aliases. There is also a system here, but it can only show the status. There are guilds of players.