tnx guys for pointing me to gamespot, im also stuck here. for those lazy enough to search, here it is:
Interlude
After Tippi goes down for the count, save your game and head down to Flipside 1st Floor. Move into the background near the card shop and use Fleep on the crack in the wall between the two houses to open a doorway. That’ll lead you back to a large church-like structure, inside which are eight blocks. Move to the left side of the room and hit each of the blocks one time, moving from left to right. If you hit each of them once in this order, the glass here will disappear, letting you move into the background. (If you mess up, simply leave the church and come back inside to reset all of the blocks.)
Now, heading through the glass and out the door on the other side of the church will lead you to Flopside, a mirror image of Flipside, but a bit shabbier and more run down. This version is much the same as Flipside, but Flopside will feature some new shops and goodies. The card shop here will sell specific cards, not random ones, while the cook here will make new foods from two ingredients.
Pixl Quest!
Merlee will lead you to another Pixl, albeit one that's apparently mostly useless.
If you head to the fortuneteller here in Flopside, Merlee, you can jump over her crystal ball and speak to her from behind it to get a side quest. (If it’s not available yet, just come back later, but try to get it done before chapter seven.) She’ll send you off to speak to Merluvlee, the fortuneteller in Flipside, who in turn will send you to Bestovius, the wizard in the first screen of 1–1. He’ll send you to Watchit in 1–2. He, in turn will send you to Merlumina, who resides at the very end of chapter 1–4, in the screen beyond where Fracktail was. She’ll sign the paper, allowing you to retrun to Watchit, then Bestovius, then Merluvlee, then Merlee herself.
Merlee will give you the Random House Key. Return to Flopside 1st Floor and go into the background to find a locked door. Open it to find Piccolo, a music-making Pixl. You can bring her up to the Flipside 3rd Floor Outskirts and play her near the large block with the music symbol on it to reveal a Merlee Card. There’s another block in the exact same place in the Flopside 3rd Floor Outskirts that holds a Nolrem Card; you can use Piccolo here, as well, even though the block doesn’t have a music symbol on it.
Moving On
If you head up to the 2nd Floor of Flopside, you’ll come across a flipped Merlon, who calls himself Nolrem. He’ll tell you that there’s a new Heart Pillar on the 3rd Floor of Flopside, and indeed there is. Find it, insert the Pure Heart, and a new door will open on the top part of the White Tower. If you head all the way to the left side of Flopside 2nd Floor, you can get Welderburg to make you a pipe between that area and Flipside, but it’ll run you 300 bucks. Otherwise, return back through the Mirror Hall and head up to the roof to find the new door to Chapter 5.
Linear Mode
