Alter Field Type
At the title screen, hold Left or Right, then press A/Start to start the game with a different field type. You can find an additional one by holding Left+Up or Right+Up before pressing A/Start.
Enter Tile Editor
At the title screen, enter the credits screen as described below 11 times, then choose the "Option Start" mode. During gameplay before drawing a tile, hold Down then press Start to enter the tile editor. 16 numbers will be displayed on the screen: you can use the D-Pad to select any of them and A/B to increment/decrement them. These numbers represent the custom tile queue which is used to select the next tile.
In order to use this in Quick Start, you must enter the credits 254 times. For a 2-Player game, you need to do it 255 times.
