Cheat mode:
Move the pointer to the top left corner of the first menu screen and press 1, 2, 2, 1. Select a difficulty level in the next menu to display the cheat mode screen with level select and other options.

2	1	BOIXUMK	KONOOBO	CKSTCBA
3	1	BXVNMBS	KKPKCMH	CQIIXNC
4	1	BWAGXDA	KWNDUVE
5	Bonus	BQLOABS	KUYTDBH
6	2	BDCLGBA	KHMDRMC
7	2	BHEDGDS	KLYVDBI
8	2	BMCBUBG
9	2	BRLAAJQ
10	Bonus	MTALIXE
11	3	MBETZXS
12	3	MWNOXHA
13	4	MUPGAHA
14	4	MDWORBI
15	4	MLUIMAK
16	4	MMWZIBO
17	Bonus	MZYLMBC
18	Bonus	QBMTXBU