Tetris! (very original I know )
Tetris v3 5188bytes

Is decently faithful to the official Tetris Guideline's
Uses the Super Rotation System, allowing for crazy T-Spins and wall kicks
TGM randomizer for a much more balanced next piece selection
and the Scoring system to keep track of Back2Back Tetrises, T-Spins and Perfect Clears

Using the combined power of DrawStat, BG-Pict and Cls; it runs about as fast as one can get

Controls:
[◀] Left
[▶] Right
[▼] Soft Drop
[▲] Hard Drop
[F1] Rotate Left
[F2] Rotate Right
[SHIFT] Hold
[EXIT] Main Menu

Compatible with C.Basic
Runs much faster and has the ghost feature
as well as having access to Ultra mode

Links

Links

Tetris_Guideline
SRS
Wall_kick
TGM_randomizer
Drop
Line_clear
DAS
Combo
Scoring
Perfect_clear
T-Spin
Marathon
Ultra
40_lines