Stage Select - Growl (Genesis)

System: Sega Genesis
Game Title: Growl a.k.a Runark

The Sega Genesis game Growl has a hidden Stage Select accessible from the Options Menu. Using the following Game Genie code, your cursor will be highlighting the hidden option when you first enter the Options Menu.

Highlighting Filed Option By Default (Options Menu)
AYTT-AAEL

Not all choices of levels are working. Here are the different values shown:
A, 6, N, P, T, CAVE, Y1, 08-16.
The values 08-16 seem to free the game.