I know i did, in our Taxi driving game.

Marked yellow is the area i initially outlined as the map, and red is what i actually managed to make in the jam. If you look closely, you can even see the buildings in the red part.

It is about 3% of the area that was planned - but still enough to work well for the game. The bigger scope would have required much more complex systems - with the small part, i can keep the whole simulation running and don't need to load and drop chunks, and i can display a readable city map in one screen without scrolling.

Anyway, i always like to see what the initial ideas or expectations are, and how they hold up to reality.