My idea for a harder TGM mode

Hyper

This mode is similar to Shirase and T.A. Death in speeds, but with a much harder experience. Similar to Shirase, the level can go beyond 999. Old and new gimmicks also appear as features in this mode.

At levels 500, 1000, and 1500, you will be stopped immediately if your time is not under the objective.

Torikans:

500: 3:10.00
1000: 4:50.00
1500: 7:30:00

At level 500, garbage lines will appear at intervals. The bottom row is copied.

At level 1000, the garbage stops.

From level 1500 to 2000, every tetromino that spawns is made of monochrome [ ] blocks.

At level 1700, there is a 1-piece cooldown for holding a piece.
At level 1800, there is a 2-piece cooldown for holding a piece.
At level 1900, there is a 3-piece cooldown for holding a piece.

Upon reaching level 2000, the game displays a message for 30 seconds, saying in the following order:
"You finally made it." "You have become truly skilled to get here."  "In the end, there is still one more challenge left to do." "Are you ready for the challenge?" "Let it begin!"
After that, a credit roll plays, with similarities to Shirase's with a big block gimmick, but with the speed of that mode's level 1100. During the roll, the hold cooldown is deactivated. The roll lasts for 5 minutes.

Grading is handled differently in here as well. The game will give the player an S grade equivalent to the sections cleared, from S1 to S20. In the credit roll, when the player survives for a certain time, they will get a grade based on the time:

1/8: Master
2/8: MK
3/8: MV
4/8: MO
5/8: MM
6/8: GM
7/8: GM+
Survived: God