Animal Well does not have a PEGI release. I guess Clear River Games didn't pick it up. There's this, the ESRB Limited Run Games release, and an Asian region cartridge through SuperDeluxe.
Mario Raceway had a skip where you could leap over a wall and cut a big chunk of the track off at the risk of clipping out of the level, it was known even in the late 90s. Hitting it on all three laps would get you a time around 5x seconds, and it was easiest with Yoshi or Peach.
I have one of these. The contest did not specify one entry per household as far as I could tell (I could have been wrong) so I used up a whole roll of film beating Mario Raceway over and over and photocopied the entry form.