If you make a qualifying hand with kings or better up top, or a wheel — — in the middle, then on the next hand you enter Fantasyland. Just like in high-only Pineapple OFC, in Fantasyland you get 14 cards right away and set 13 of them into three rows face down while discarding one. Your opponents then play out their hands normally, and the result is scored against your hand.
You can stay in Fantasyland, earning another round in this advantageous position, by making a big enough bonus. For Deuce Pineapple you need either trips (three of a kind) on top, a wheel low in the middle, or quads (four of a kind) or better on the bottom to remain in Fantasyland.
Meanwhile, in a twist from high-only Pineapple OFC, you can also earn a 15-card “Super Fantasyland” round by qualifying for Fantasyland twice in the same normal hand. Here, for example, the player qualifies for Super Fantasyland by making both aces on top and a wheel in the middle: