style

theme (underwater) next to that is a greyed-out icon that looks like a boat. I think this is used to add water to levels.

camera next to that is a feather (more on that later)

time limit

goal: it appears you can customize an objective. In this example they've made the goal collecting 100 coins.

red and green character button: character or multiplayer toggle?

ghost trail

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RagnarokX's Super Duper Super Mario Maker 2 Analysis:Themes:Ground:SMW3DWUnderground:SMW3DWDesert:SMB33DWUnderwater:3DWIce:NSMBUJungle:SMWNSMBU3DWAirship:SMBSMB33DWGhost House:SMWOf particular interest: the NSMBU backgrounds are new. In NSMBU all of the ice levels were night-time:However in Mario Maker it looks like this:The trees are the only thing from NSMBU.The NSMBU Jungle one is really weird. The starry background is completely new.Based on these two, ESPECIALLY the NSMBU Jungle part,This is a different background from the one used in SMM1's SMW ghost houses:SMM1:Possibly another example of custom backgroundsFurthermore, you can add water to levels. This has only been shown in the Jungle theme:...however I imagine you'll be able to add water to any theme.Of particular note is that there is no poison swamp water in these examples.Okay, so new stuff:I think the car will replace yoshi in 3DW.I wonder if Mario can go through red pipes and if they shoot him out like a cannon.It appears that you won't be able to switch as freely between the styles as you could in the first game. At least perhaps not with 3D World specifically...SMW style has 4 wheels worth of enemies (the 4 dots under the enemies tab indicates how many wheels)But 3DW only has 3 wheels worth of enemies:People were wondering what is under the key tab, but you can see one if its wheels on the left here:The yellow key wheel contains things like tracks, coveyor belts, 1 way walls, fire bars, snake blocks, and on/off switches. It likely has more than one wheel.When placing an object, a menu will pop up showing you all of the options that object has. This shows that piranha plant can be normal, fire, big, winged, and/or parachute. This likely is an option to shaking or giving the objects items to transform them.The left sidebar:From top to bottom:You can make custom autoscrollers that move in multiple directions. Here we see that feather icon has lit up and is the custom scroll button. Also, the camera button turned into a bird.I believe that you can change the scroll speed at each point by clicking the > and >>. In this example it moves at > speed until it reaches bird 2 and then speeds up.Regarding vertical levels, I think this is the case, but we can't say for certain from this footage. The screen never scrolls far enough vertically in any of the scenes to say for sure that they go higher than 2 screens like in the first game.Mario, Luigi, Toad, and Toadette appear to be playable. I wonder if they have different attributes. I think that's what the red/green person toggle is for.The boat from Mario Paint: