An intrepid designer built Route 1 from the original Pokemon games (possibly from Gold/Silver, not Red/Blue).  I like the various touches of trainers, and “wild” Pokemon that appear throughout the level.

Pokemon was something of a revolution back in the day.  I remember my first time I beat the Elite Four.  I was so nervous and worried that I would run out of potions, or revives, or something.  Even to this day, I get worried, even with my level 97 Dodrio, I still don’t think I’m worthy sometimes. Man, I should go play X again, it’s been awhile, I bet the guy I sent to the Global Trade Center finally got traded!

{Reddit}