Aquarium Park (Sonic Colors)
Here is the Japan-flavored indoor aquarium level from Sonic Colors. Hope you packed swim trunks and floaties!
Two square floor blocks connected by small bridges to the left of a pagoda standing tall on a structure, the block further left lower than the one in the middle of the screen. (In this particular pic, the pagoda appears as if it would be a walkoff, but my version of it would have the size of it decreased to have a little breathing room on the right edge of the screen.) To the left of and under the bridges and blocks is the large pool of water you would see in the original game, just barely level with the lower block. in fact, just like Sonic Colors, you can walk on the water if you run across it, though if you stop running for any reason other than to turn around while still running, you immediately start falling down to the blast zone. No infinite double jumps in water for you, though.
Speaking of the water, after a half-minute or so, the tide will rise up to completely fill the screen with water, similar to my example pic. Don't worry about drowning, though, it's as safe to fight underwater as it is to fight in space! When the tide rises, there will be a stake-like platform that also rises up to level with the lower platform, acting as both a wall and platform for lower in the stage. When you go underwater, rising tide or no, your fall speed and horizontal movement decrease, and your jump height increases. However, your horizontal launch distance decreases and upward launch distance increases, so enjoy the extra midair freedom, because it'll be that much easier to KO you from the top of the screen and harder to KO from the sides. When another half-minute passes, the water will lower back down, letting players fight like normal again, and the water goes back down to where you can run on it.
Sample Music:
Aquarium Park: Act 1 (Since the music to each act in the original game is various renditions of the same general music, I used the Act 1 edition as the most "vanilla" version, with the intention that Smash makes it's own take on the theme.)
Starlight Carnival: Act 3
Reach for the Stars <Original>
Aquarium Park (Sonic Simulator Edition) <Original>
Unlock condition:
Summon Starfy from the Assist Trophy as Sonic 10 times