Ori/Ginso Backtrack OOB

The Ginso backtrack OOB is found in the room before the first miniboss, and can be used to leave Ginso after acquiring bash. This is used as a major skip in any%, since finishing Ginso and acquiring stomp is not necessary to beat the game.

To get out of bounds, stand on the redirect block below the center vertical portal, then do a high jump and double jump into the right side of the portal. If done correctly, you will come out to the right of the lower portal. Then, you can carry your momentum to the right, then when the screen pans down, double jump back to the left to enter the portal in the room below. Alternatively, you can land to the right of the portal, place a save, and then backflip to the right to recreate the momentum of going through the portal initially. Staying in the out-of-bounds area too long will reset you back to your previous save, and mistiming the double jump can cause you to get stuck in the wall.

This video demonstrates 2 methods of doing the OOB -- first in one motion, then placing a safety save.

Note that the second OOB method in the video does not oscillate between the portals as much -- this can be achieved with either OOB method, and is done by releasing left as you reach the lower portal (momentum to the left will carry you through the portals several times).