This application is awesome!
However thought there is three thing I feel is missing and that would be :
The option to actually remove 3D Levels in Edit or Tools.
If you place a trap on the 2th level leave an visible icon like an X or the falling dude for example on the level 1 where the trap is placed so you'd know without looking or counting rows.
And be able to use this tool to remove earlier created mazes because if you lack on sql knowledge it could be a real pain to just have to delete an maze and redo it, so it would just be to create a form where you enter the information about what object you used and default is the maze create, if you used stairs check box and then enter what map and zone/area you made the maze in with a warning that it will remove all mazes in that location.
Great work, best regards Unknown96!
SQL Code example that you probably already know because of its simplicity
DELETE FROM gameobject WHERE id LIKE 745000 AND map LIKE x AND zone LIKE x
DELETE FROM gameobject WHERE id LIKE StairId AND map LIKE x AND zone LIKE x;