(There's no video for Tetrix yet. Please contribute to MR and add a video now!)
Tetrix is a very simple Tetris implementation for late 1980's Macs. It features basic color and a single annoying square beep sound when a line is completed. Controls are smooth, but once you press 2 to make the piece go down, it cannot be stopped, it goes all the way to the bottom.
Tetrix-1-1.sit (18.14 KiB / 18.58 KB)
Tetrix v1.1 / compressed w/ Stuffit
Mac OS 5.x - Mac OS 9.2.2
Emulating this? It should run fine under: Mini vMac