UPDATE: I lost the files for update 1.1. It'll be delayed for quite a while.
I know people have made lots of Tetris clones before, but I've always wanted to make one.
Creating this was mostly inspired by other clones (namely Tetyis and Pico Tetris).
I've incorporated pretty much all guideline rules, including SRS, hold, and more.
Controls

Use leftright to move the piece, well, left and right.
Use down to soft drop.
Use up to hard drop.
Use X or O to rotate the piece. You can swap the directions by rebinding the controls.
Press X and O to hold the current piece.

Modes

Marathon: Clear 150 lines
Sprint: Clear 40 lines as fast as possible
Endless: Self-explanatory
The Grand Master: Clear 999 levels, +1 for each piece, +1 for each line, with the TGM speed curve.
Secret Grade: Google it, it's hard to explain in text
Blitz: Get the highest score in 2 minutes. The game ends when you place a piece past the 2 minute mark.

Features

Super Rotation System
Rebindable controls
Mino Designer
Locking Soft Drop if you want it
Moving background that totally isn't from Tetris DX that i totally didn't steal

I hope you like it, and I'll probably release more versions if I get enough suggestions.
Changelog