Simpsons – Treehouse of Horror – Gameboy Color

Simpsons - Treehouse of Horror - Platform: Gameboy Color
 
Password screen
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Press Right(2) when "Start" appears on the banner of the Simpson house.

Level Passwords  
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2 LYTPJTQWBKQ or FWXCKJXGLWN  
3 SKCFKPJTFSJ  
4 GFTFSRTNWQC, QCGTGYSTFSK, or BXPGCFPYJWB  
5 WSQJLTQFYWK  
6 NPKYGBKTFWQ  
7 XQRFJWRBTWP