Tool-assisted Superplay (TAS) of Crystal Castles Arcade (935,997)
This TAS try to reach the highest score possible. The difficulty for me was to try to get as much gems as possible for each levels. It took about a week of work to do that.
Note:
-The warp to 2.1 is used because you get a higher score that way. 37887 before warp vs 71782 after
-After you jump to warp, you can collect some gems at 99 points each. The TAS collect 1 gem more than usually is collected. I do not know if this is doable in real life.
-This TAS is not perfect but it is very nearly the highest score possible. I have already spotted 2 or 3 more gems I could get.
For more information about Crystal Castle the best place is: http://www.classicarcadegaming.com/games/cc/index.htm
See https://en.wikipedia.org/wiki/Tool-assisted_speedrun for more information on Tool-Assisted Speed-runs/Superplay
or http://tasvideos.org for more video.