you need to finish all of the quest.
i just got the answer and the code is booty
Get to the Chum Bucket and beat Karen five times.
JELLYBEAN
The cheat code is: unlockoutfits on
No but there is a cheat that shows you where to get the artifacts.
rope on bottom
You can activate Bella sara tickets, but its open for free right now.
You go until Jellyfish fields.. Now you have to wait for the new premiere "Spongebobs Frozen face off" and you can unlock more.
Mcplaycwa <-- to unlock a ra-7 robot keep searching the internet for codes but this is the only one i found :]
I don't know it But i know one code to unlock speeder bike it's - jetpack001
I don't think you can unlock it. if you can you will have to complete a stipulation on a wrestler's road to wrestlemania. One of them will unlock a move-set.
structures- then at the bottom its the grid