Yuzuhara's Bottle Adventure

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Yuzuhara's Bottle Adventure (YBA) is a set of glitches you can achieve by drinking a potion at the moment you transition screens. The effect of the YBA depends on where you are and what kind of bottle you drink.

Subtile YBA

To perform a subtile YBA, drink a red or green potion in a subtile door. You need to have less-than-full health (for red) or magic (for green), so that you will be able to drink the potion.

The underworld map is divided evenly into "supertiles", which are twice the size of the screen in both dimensions. Many rooms are the size of your screen, and those are subtiles. A door that takes you to a new room on the same supertile is a subtile door.

You can see the layout of the tiles in the underworld on the annotated EG map.

A red YBA will cause an "elliptical fade-out" effect that you press A to complete. A green YBA will refill your magic and health. Either way, the result will then change the destination of the door so that it skips over the subtile it was supposed to go to, and instead takes you to the edge of the next supertile in that direction. As an example, this subtile YBA allows you to skip part of Agahnim's Tower and save a key:

The path of a subtile YBA from the first room of Aga's Tower

North YBA example

We'll continue with the Aga's Tower example, which is a YBA in a north-facing door.

As long as the door is not an autodoor (see below), you can inch into the door by holding out your sword sideways. You've reached the correct spot when you can only see 1 pixel of Link's feet.

Moving sideways into the door
The desired position for a YBA

Press up and Y simultaneously to cause the YBA. In this example, we used a red potion, so the elliptical fade-out happens; press A to continue.

During the effect of a red YBA

When the effect completes, you are at the bottom of the next supertile.

Where you end up after the YBA

If you drink a blue potion instead, you will cause Underworld Fake Flute, an effect that is too glitchy even to be allowed in No Logic and will probably hardlock your game if you keep playing anyway.

Bomb snapping

Doors that you have to open with bombs or by defeating enemies are autodoors, which move you through them automatically. You won't naturally be able to stop in an autodoor, but in an upward-facing door, you can accomplish this by interrupting your movement with a bomb.

To start, line up against the door on the highest pixel you can be on without entering the door. Sliding sideways along the wall with your sword out is one way to get here.

Lining up for a bomb snap

Place a bomb in the door, tap up to enter the door, and pick up the bomb just before you screen transition. You should be able to see just your legs in the door. If you see more of your sprite, you're in the wrong position because you picked up the bomb too early.

After grabbing the bomb

Now you're holding a bomb that's about to explode. The next step, conveniently, involves using a bomb that's about to explode. You can use the same bomb for both steps, but if the bomb explodes, that's okay -- you're still in the correct position and can place another bomb and pick it up.

Throw the about-to-explode bomb. When it lands and is flashing, tap up and press A shortly afterward. This explosion should knock you fully into the door without transitioning the screen.

Snapped into the door

From this position, you can YBA, and after the YBA effect resolves you'll automatically transition through the door to its new glitched destination. In this example, drinking a red or green potion while tapping up will take you to Misery Mire.

Supertile YBA

To perform a supertile YBA, drink a red or blue potion in a supertile door. You need to have less-than-full health or magic, so that you can drink the potion.

A red potion will have the same fade-out effect as in the subtile YBA. A blue potion will pop up a text box or menu, generally the text box that you've seen most recently. The setup is otherwise the same as subtile YBA.

Performing a supertile YBA will take you to a position in the middle of the supertile you're currently on, while the game thinks you've gone to the next supertile. If you walk through the same door again, you'll skip over the next supertile.

In this example of how to reach Rando Room in no logic, the transition from the Ganon's Tower hidden floor room to the Rando Room is a supertile YBA.

Spin YBA

To perform a spin YBA, hold out and charge your sword while setting up a YBA, and release it during the effect. This is easy to do with a red or blue potion. If you're using a green potion, you need to be sure to release the sword spin while your hearts or magic are refilling.

A subtile spin YBA will skip an extra supertile compared to the non-spin subtile YBA, moving you 1.5 supertiles in that direction instead of half a supertile.

The path of a subtile spin YBA

Overworld YBA

YBA can be used on screen transitions in the overworld. These need to be better described.