All Star Jam-74.
A circular Flat Earth is suitable for most ancient mythologies or Discworld. The terrain would likely be a somewhat altered version of Eastern Hemisphere.
It also suggests square or triangular worlds. Such worlds are less likely to have a geographical similarity to ours. The vertices are likely to be focal points of some principle such as the Classical_elements with the central area being mixed. A random word could give you ideas. A game example would be the Glorantha setting of Runequest.
- Circular Flat Earth
- Square Flat Earth
- Triangular Flat Earth