i mean cmon it just makes sense

Various categories for TU1 already exist.

I just checked all the catigories. Are you refering to the main game or something?

this leaderboard has ILs for obtain items, enter Nether, etc and it includes all main tutorial worlds as well including tu1

The catigories only go back to the piston tutorial, which is TU3. I don't know if I'm dumb and stupid, but I can't see sanything before TU3.

Piston refers to TU0 - 4

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I think why you're confused is because pistons were added to the tutorial world in TU3. This makes TU1 and TU2 obsolete for some categories. I wouldn't recommend running with TU1 and TU2, as you're forced to do the tutorial each time.