Bubble Bobble Cheats - GameBoy

Level select
Enter "KGBJ" as a password. Press [Left] to select a level.

Hidden level
Enter "KZ5K" as a password.

Level	Normal	Expert
1	VLL1	VLT1
2	VGL1	VGT1
3	KLL1	KLT1
4	KGL1	KGT1
5	WLL1	WLT1
6	WGL1	WGT1
7	JLL1	JLT1
8	JGL1	JGT1
9	XLL1	XLT1
10	XGL1	XGT1
11	HLL1	HLT1
12	HGL1	HGT1
13	ZLL1	ZLT1
14	ZGL1	ZGT1
15	GLL1	GLT1
16	GGL1	GGT1
17	1LL1	ILT1
18	1GL1	IGT1
19	FLL1	FLT1
20	FGL1	FGT1
21	3LL1	3LT1
22	3GL1	3GT1
24	DGL1	DLT1
25	4LL1	DGT1
26	4GL1	4LT1
27	CLB1	4G51
28	CGB1	CL51
29	5LB1	CG51
30	5GB1	5L51
31	BLB1	5G51
32	BGB1	BL51
33	VLBF	BG51
34	VGBF	VL5F
35	KLBF	VG51
36	KGBF	KL5F
37	WLBF	KG5F
38	WGBF	WL5F
39	JLBF	WG5F
40	JGBF	JL5F
41	XLBF	JG5F
42	XGBF	XL5F
43	HLBF	XG5F
44	HGBF	HL5F
45	ZLBF	HG5F
46	ZGBF	ZL5F
47	GLBF	ZG5F
48	GGBF	GL5F
49	1LBF	GG5F
50	1GBF	1L5F
51	FTBF	1G5F
52	FZBF	FT5F
53	3TBF	FZ5F
54	3ZBF	3T5F
55	DTBF	3Z5F
57	4TBF	DT5F
62	5ZBF	DZ5F
63	BTBF	4T5F
64	BZBF	4Z5F
65	VTB3	CT5F
66	VZB3	CZ5F
67	KTB3	5T5F
68	KZB3	5Z5F
69	WTB3	BT5F
70	WZB3	BZ5F
71	JTB3	VT53
72	JZB3	VZ53
73	XTB3	KT53
74	XZB3	KZ53
75	HTB3	WT53
76	HZBW	WZ53
77	ZTBW	JT53
78	ZZBW	JZ53
79	GTBW	XT53
80	GZBW	7Z53
81	1TBW	HT53
82	1ZBW	HZ5W
83	FTBW	ZT5W
84	FZBW	ZZ5W
85	3TBW	GT5W
86	3ZBW	GZ5W
87	DTBW	1T5W
88	DZBW	1Z5W
89	BTBW	FT5W
90	4ZBW	FZ5W
91	CTBW	3T5W
92	CZBW	3Z5W
93	5TBW	DT5W
94	5ZBW	DZ5W
95	BTBW	4T5W
96	BZBW	4Z5W
97	VTBJ	CT5W
98	VZBJ	CZ5W
99	KTBJ	5T5W
100	KZBJ	5Z5W

Defeating the Bosses

Level 25
Jump up to the middle of the room before the Boss starts to move and get the power-up to breath fire. The easiest way to defeat him is to stand on the highest platform and shoot him on his highest jumps. Dodge when he tries to jump underneath your character.

Level 50
As before, collect the power-up before the Boss starts to move. Learn his movement patterns and attacks before trying to shoot him.

Level 75
Again, quickly get the power-up. Stay on the level that hangs approximately where his head is when he jumps. Shoot at him when his head is at your character's level. Watch out for the fireballs he throws; although once their pattern is learned, they are easy to dodge.

Level 100
The final boss. The power-up in this level works slightly differently than in previous levels. Your character gains the ability to shoot lightning bubbles which need to be popped in order to be effective. Climb up the platforms while the Boss has his back turned. Then, jump towards the wall and press the [Attack] as fast as possible. As your character moves down the wall, a steady stream of lightning bolts will be fired at the Boss. These bolts will also destroy the projectiles he throws. Do not linger in the corners too long. As with the previous bosses, defeating the final Boss becomes easier once his patterns are learned. After defeating the final Boss, a password which will restarts the game at level 1 with harder enemies will be revealed. The bosses will need more hits to defeat at this new difficulty setting, but their patterns remain the same.

Extra points
Stand facing the wall. Get directly next to it, then shoot bubbles. They will automatically pop, giving you 10 points per bubble. You can get very high points with this trick.