I've been buying those "multicarts" that have hundreds of games on them and I know damn well I won't play a lot of the games on it so I've decided, every so often, to generate a number on an app and play the corresponding game.

#91 is Spartan X 2, a Japanese exclusive FAMICOM game that lasts about 15-20 minutes.
It's okay if you wanna do something for half an hour. It's mainly just a walk right and spam B or A kinda game.

I don't know the plot since it's in Japanese but you don't really need to understand anything.