1-Player Game Codes

AAUEUSSO        Speed doesn't increase
VNUEUSSO        Speed increases much faster
TEXAKYPA        Start and stay at speed of 25
ZEKESSPP + PESAOSAP     Max speed is 2
ZEKESSPO + PESAOSAO     Max speed is 10
YEKESSPO + TESAOSAO     Max speed is 15
GOKESSPP + LOSAOSAP     Max speed is 20

1-Player vs 2-Player or 1-Player vs Computer Game Codes

OZNETPOU + PANEYPAA     Every round starts with 4 fixed blocks
OZNETPOU + YANEYPAA     Every round starts with 10 fixed blocks
OZNETPOU + GANEYPAE     Every round starts with 15 fixed blocks
OZNETPOU + PPNEYPAA     Every round starts with 20 fixed blocks

All Games Codes

AAVZVYEA        Cannot pause game with START button
AVEXOYXZ        Don't hide remaining pieces during pause