Here are the following codes I've come up with for Tetris (Tengen Version) for NES:
Block/piece modifier (for player 1) - 0066:?? (for player 2) - 0067:??
[replace ?? with any of the following to always get the following block]:
01 - line block
02 - T-block
03 - square block
04 - J-block
05 - L-block
06 - S-block
07 - Z-block
Level modifier - 042C:?? and 042D:?? [replace ?? with any of the following to play level]:
042C:30 & 042D:30 - level 0
042C:30 & 042D:31 - level 1
042C:30 & 042D:32 - level 2
042C:30 & 042D:33 - level 3
042C:30 & 042D:34 - level 4
042C:30 & 042D:35 - level 5
042C:30 & 042D:36 - level 6
042C:30 & 042D:37 - level 7
042C:30 & 042D:38 - level 8
042C:30 & 042D:39 - level 9
To play levels 10 and higher (up to level 17) use the following codes:
042C:31 & 042D:30 - level 10
042C:31 & 042D:31 - level 11
042C:31 & 042D:32 - level 12
042C:31 & 042D:33 - level 13
042C:31 & 042D:34 - level 14
042C:31 & 042D:35 - level 15
042C:31 & 042D:36 - level 16
042C:31 & 042D:37 - level 17
Max score at 999,999 for player 1:
0418:39
0419:39
041A:39
041B:39
041C:39
041D:39
Max score at 999,999 for player 2:
041E:39
041F:39
0420:39
0421:39
0422:39
0423:39
Block/piece modifier (for player 1) - 0066:?? (for player 2) - 0067:??
[replace ?? with any of the following to always get the following block]:
01 - line block
02 - T-block
03 - square block
04 - J-block
05 - L-block
06 - S-block
07 - Z-block
Level modifier - 042C:?? and 042D:?? [replace ?? with any of the following to play level]:
042C:30 & 042D:30 - level 0
042C:30 & 042D:31 - level 1
042C:30 & 042D:32 - level 2
042C:30 & 042D:33 - level 3
042C:30 & 042D:34 - level 4
042C:30 & 042D:35 - level 5
042C:30 & 042D:36 - level 6
042C:30 & 042D:37 - level 7
042C:30 & 042D:38 - level 8
042C:30 & 042D:39 - level 9
To play levels 10 and higher (up to level 17) use the following codes:
042C:31 & 042D:30 - level 10
042C:31 & 042D:31 - level 11
042C:31 & 042D:32 - level 12
042C:31 & 042D:33 - level 13
042C:31 & 042D:34 - level 14
042C:31 & 042D:35 - level 15
042C:31 & 042D:36 - level 16
042C:31 & 042D:37 - level 17
Max score at 999,999 for player 1:
0418:39
0419:39
041A:39
041B:39
041C:39
041D:39
Max score at 999,999 for player 2:
041E:39
041F:39
0420:39
0421:39
0422:39
0423:39
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