NOTE: For those who got an "Error: cannot apply any patches" thing, all you need to do is to:
1. Open yer Facebook browser
2. Go to Tetris Battle
3. Clear your Cache (This cheat was supposed to be used in Google Chrome)
NOTE: How to clear your (Google Chrome) cache, go to the wrench icon at the upper right corner of your browser. Then click it, after clicking it, a drop-down box will appear. Choose options then wait for it to load in a new page/tab. After waiting, Go to "Under the hood". Then when your inside to that page, choose "clear browsing data". After that, choose "empty your cache" and also you need to click the drop down box that says "last 4 days ago" and then switch the box to "the beginning of time".
---MISSION ACCOMPLISHED---
4. Now after clearing your browser cache, next thing you need to do is to open the cheat that sanji043 provided (piaipRCHack_v1_20100918).
5. After opening the cheat, apply the method that sanji043 had provided. Doing this things correctly will get you to make the cheat work!
LAST NOTE: At your Google Chrome browser, open Tetris Battle, Go to 2P (2 player) Battle or anything like SHOP or etc., then the next thing you will need to do is to open the cheat, apply all the patches, then do the method, then LAST......click PATCH!.
Now this, will surely WILL WORK for you!