Bee 52 [NES]

:           ,     .

(FIX) Cheat mode (added 20.02.14):
At the splash screen with Bee, before the stage number screen or the level restarting, enter one of the following button sequences then press Start to apply corresponding effect. The message "cheat!" will appear at the bottom of the screen to confirm correct code entry.
     "        ".       "!".
A, Up, Down, Left, Right, Start	-	Extra 5 Lives (available only before the stage screen)
B, Up, Up, Up, Right, Start	-	Level 5 (available only before the stage screen)
Select, B, B, B, Left, Start	-	Level 9 (available only before the stage screen)
Up, Up, B, A, B, A, Start	-	Do not clear powerups and items after death (useful only after death)
Down, Down, Up, Up, Start	-	Water can't dodge you back (available at any splash screen, need to be reentered any time after death)
Left, Left, Right, Left, A, Start	-	Level 13, Enables gravity (available only before the stage screen)
Right, A, B, A, B, Start	-	Junior bee option, twice the weapon power, and defends from the instant death once (available at any splash screen, can be reentered after death)

(UNI) Smiley test:
Absolutely all games by Codemasters have internal PRG ROM and CHR RAM testing routines. So called "Smiley tests". Tests are normally enabled, but for triggering it needs pressing all D-Pad buttons. Hold Up + Down + Left + Right + A + Select + Start to enter the PRG ROM test or hold Up + Down + Left + Right + B + Select + Start to enter the CHR RAM test, and press Reset. A green smile means that test passed, red sad face - failed.

 128     ,      Game Over.

http://cah4e3.shedevr.org.ru/cheatsbase.php#166
http://magicteam.net/forum/index.php?topic=446.0