(There's no video for Robot Arm yet. Please contribute to MR and add a video now!)
Robot Arm is a nice B&W arm simulator that you can experiment with the mouse cursor. Holding down the click button on the mouse grabs and releasing it releases whatever box you or object you grabbed. Pulling the bottom/left lever down activates gravity and makes all the visible boxes fall down on the bottom of the screen. Pulling the apple logo chain down exits the program.
RobotArm.sit (6.41 KiB / 6.57 KB)
Robot Arm / compressed w/ Stuffit
Mac OS 6.x
Note: Freezes the whole system under Mac OS 9 (SheepShaver).
Emulating this? It should run fine under: Mini vMac