Tetris! is the only Tetris clone I know that deliberately tries to reproduce the original ASCII Academysoft Tetris of 1986. Since the latter used 40-column mode too (something farely rare with PC Tetrises), it could do a very good job on the Commodore 64, where this was the only mode available.
Torsten Crass keeps a download in .PRG format on his homepage. The version you can download below is in .T64 format and should work in most emulators.
| Tetris for the Commodore 64 | ||||
|---|---|---|---|---|
| Twister | Tetris | 88 |  |
Shane Broadberry |
| Team Tetris | Tetris | 90 | ||
| Tetris! | |
Torsten Crass | ||
| Stack 'Em | Columns | 91 |  |
Brian Boese |
| Su Sweet | |
|||
| Fetris | Tetris | 92 |  |
|
| Motley Tetris | 94 |  |
||
| Pill-Box | Dr. Mario | |
Christian Wolf | |
| Girltris | Tetris | 97 |  |
|
