R1 - Fungal Frenzy (based on mushroom hill)

Present - A forest covered by large mushrooms letting small amounts of sunlight break through the canopy

Past - Small forest with mushrooms at ground levels, very bright sun shining down on the ground

B.Future - A farmland abused by machinery to extract poison from mushrooms above.

G.Future - A city connected by mushrooms for animals to thrive.

R2 - Wonderous Waterworks (Original but takes some elements of hydro-city (its not hydrossity)

Present- a facillity underwater used to pump water around the planet
Past - a developing facillity above old ruins being constructed to pump water around the planet
B.Future - a chemical plant run by eggman used to convert the water to his fuel to run his machinery
G.Future - a facillity used to pump water around the planet to help trees grow and animals thrive, it is also a large conservaion of coral.

R3 - Granite Garden (this one is quite obvious (based on marble garden))

Present - Unpolished granite with a large but decaying temple in the background.

Past - A large temple in the background, it seems the area is a trade city.
B.Future - stained granite making the place look like a rusted dystopia, dead bushes filling grassless fields. the temple is destroyed.
G.Future - Smooth granite decorating the floors with fauna draping down from the ceiling. the temple is reconstructed and the trade city is rebuilt.

R4 - Frostburn Fortress (ice cap and lava reef combined; it has a mechanic to swap the ice and lava variants)

Present - Fortress with a mechanic which turns the land from cold or warm respectively.

Past - More fortressy looking, more medieval feel.

B.Future - cracked fortress, used as a prison, crumbling floors if not it is replaced with metalic look alikes.

G.Future - Used as a recreational area with proper safety precautions.
R5 - Aerial Artefact (based on sky sanctuary)

Present - City in the sky, quite a popular tourist attraction due to its high views.

Past - developing city, scafolding holding it up in the sky.

B.Future - has to be held up by scafolding again, it is used as a large factory to develop roboticisers.

G.Future - Capital of little planet, contains the core, used as the centre of control of the planet.

R6 - Brass Breakdown (launch base zone (but more based on metalic madness)

Present - eggmans base, a construction site for something greater? a tower that with the power of the times stones can change all time zones to a B.future

Past - A construction of a metallic base, decorated with brass and refelective lighting.

B.Future - There is nothing you can do. All the time zones will be set to bad future in minuites if you don't save this place
G.Future - A celebration of Sonic saving the planet, using the power of the time stones all worlds are set to G.future