Standard Endless mode:
To unlock the “Endless” option when selecting a level in Standard Marathon mode, get more than 200 lines to complete Standard mode.
Bonus music tracks:
Unlock the following music tracks at the sound test menu by performing the corresponding tasks in Standard Marathon mode:
Ancient Tetris (Tetris GB Music A) – Reach level 19
Balloon Tetris (Touch Mode Theme) – Reach level 14
Basement Tetris (Super Mario Bros. 1-2) – Reach level 3
Bowser Battle (Super Mario Bros. 1-4) – Reach level 10
CongraTetris – Beat Standard Marathon mode
Mario Tetris 3 (Super Mario Bros. 3 Overworld) – Reach level 4
Rushed Tetris – Reach level 16
Tetris Climber (Ice Climber Theme) – Reach level 15
Tetris DK (Push Mode Theme) – Reach level 13