Gumball.
This game provides a unique opportunity to showcase superhuman skill, and is quite interesting, with the ability to control the gumball release rate.
It also exists for Apple II, and should probably be TASed on that platform.
Naturally, the TAS would raise the rate as high as possible to help meet the quota for each level.
The multitasking requirements for each level increase.
Level 1 is two colors plus rejects, and is fairly trivial for humans. quota is 8
Level 2 is three colors plus rejects, and a bigger quota. quota is 18
Level 3 is all four colors, and a bigger quota of 29, but you can still do it in one trip.
Level 4 adds a quota of 40, too big to get all in one trip, and the explosive gumballs, which must be disarmed to avoid a game over by shooting them with a pair of crosshairs, which freezes up the rest of your controls. even if they are sent off the screen down the rejects tube, they will explode when the timer hits zero. if they reach the ground or a cart, they will explode. Explosion is instant game over.
Level 5 has more bombs and a quota of 50. beat that and you win.
If you send anything but a reject down the right garbage, or let any gumball hit the ground, the quota may be increased by 1.
video of the apple II version, where someone gets to level 4, and then looses to an exploding gumball that's sent down the rejects area.
https://www.youtube.com/watch?v=myApVAyeRRQ
https://www.youtube.com/watch?v=b72a6kSTKCA beaten, but not perfectly.