(There's no video for Reflex yet. Please contribute to MR and add a video now!)
Reflex is a simple application that draws a red circle in the middle of the screen, which you're supposed to stare at while clicking randomly appearing black circles. This is supposed to improve your eye-hand coordination.
reflex0.90a.sit (12.01 KiB / 12.3 KB)
Reflex v0.9a / compressed w/ Stuffit
System 7 - Mac OS 9.2.2
Up to 750KB of free RAM depending on the window size you choose when launching the app.
Emulating this? It should run fine under: Basilisk II