These are super cool, especially the motorcycle game. Amazing what can be achieved mechanically.
Colour me jaded but I imagine these were pretty inexpensive back in the day which certainly brings some interesting perspective on the current prices of mechanical watches, most of which are doing something much simpler (granted on a much smaller scale, continuously for years on end, and with more durable materials, but still).
The simpilist one wind up space invaders: (3 minute video) https://youtu.be/xF50xGHeiM8
They show up on refurb YouTube and you can set the guts. It’s amazing what they could do mechanically.
I really like this one where you jump a motorcycle over things. Gameplay at end: (20 minutes)
https://youtu.be/32R3MHKJuQY