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1 DGVA-AAC8 Start with 25 rubber balls--both players
2 KRVA-AAC8 Start with 75 rubber balls--both players
3 NRVA-AAC8 Start with 99 rubber balls--both players
4 AWAA-AA7J Infinite rubber balls--player 1
5 AWFA-AA4Y Infinite rubber balls--player 2
6 AFHT-AAF0 Start with 2 lives instead of 3--player 1
7 AZHT-AAF0 Start with 6 lives--player 1
8 A7HT-AAF0 Start with 8 lives--player 1
9 BFHT-AAF0 Start with 10 lives--player 1
10 EK4A-AA2W Infinite lives--1-player game only
11 AFHT-AAGL Start with 2 lives--player 2
12 AZHT-AAGL Start with 6 lives--player 2
13 A7HT-AAGL Start with 8 lives--player 2
14 BFHT-AAGL Start with 10 lives--player 2
15 ALHT-AA48 Infinite lives--player 2
16 GLTA-AAAW Start stage 1, field 1 time at 50
17 LCTA-AAAW Start stage 1, field 1 time at 80
18 3CTA-AAAW Start stage 1, field 1 time at 200
19 AJZT-AA4T Start at zero time

CODES 20 THRU 54 SHOW YOU A FLASH OF FINAL STAGE BEFORE SELECTED LEVEL BEGINS
20 ABJA-AABL Player 1 starts on stage 1, field 2
21 AFJA-AABL Player 1 starts on stage 1, field 3
22 AKJA-AABL Player 1 starts on stage 1, field 4
23 APJA-AABL Player 1 starts on stage 1, field 5
24 AVJA-AABL Player 1 starts on stage 1, field 6
25 AZJA-AABL Player 1 starts on stage 2, field 1
26 A3JA-AABL Player 1 starts on stage 2, field 2
27 A7JA-AABL Player 1 starts on stage 2, field 3
28 BBJA-AABL Player 1 starts on stage 2, field 4
29 BFJA-AABL Player 1 starts on stage 2, field 5
30 BKJA-AABL Player 1 starts on stage 2, field 6
31 BPJA-AABL Player 1 starts on stage 3, field 1
32 BVJA-AABL Player 1 starts on stage 3, field 2
33 BZJA-AABL Player 1 starts on stage 3, field 3
34 B3JA-AABL Player 1 starts on stage 3, field 4
35 B7JA-AABL Player 1 starts on stage 3, field 5
36 CBJA-AABL Player 1 starts on stage 3, field 6
37 CFJA-AABL Player 1 starts on stage 4, field 1
38 CKJA-AABL Player 1 starts on stage 4, field 2
39 CPJA-AABL Player 1 starts on stage 4, field 3
40 CVJA-AABL Player 1 starts on stage 4, field 4
41 CZJA-AABL Player 1 starts on stage 4, field 5
42 C3JA-AABL Player 1 starts on stage 4, field 6
43 C7JA-AABL Player 1 starts on stage 5, field 1
44 DBJA-AABL Player 1 starts on stage 5, field 2
45 DFJA-AABL Player 1 starts on stage 5, field 3
46 DKJA-AABL Player 1 starts on stage 5, field 4
47 DPJA-AABL Player 1 starts on stage 5, field 5
48 DVJA-AABL Player 1 starts on stage 5, field 6
49 DZJA-AABL Player 1 starts on stage 6, field 1
50 D3JA-AABL Player 1 starts on stage 6, field 2
51 D7JA-AABL Player 1 starts on stage 6, field 3
52 EBJA-AABL Player 1 starts on stage 6, field 4
53 EFJA-AABL Player 1 starts on stage 6, field 5
54 EKJA-AABL Player 1 starts on stage 6, field 6
55 ABJA-AABT Player 2 starts on stage 1, field 2
56 AFJA-AABT Player 2 starts on stage 1, field 3
57 AKJA-AABT Player 2 starts on stage 1, field 4
58 APJA-AABT Player 2 starts on stage 1, field 5
59 AVJA-AABT Player 2 starts on stage 1, field 6
60 AZJA-AABT Player 2 starts on stage 2, field 1
61 A3JA-AABT Player 2 starts on stage 2, field 2
62 A7JA-AABT Player 2 starts on stage 2, field 3
63 BBJA-AABT Player 2 starts on stage 2, field 4
64 BFJA-AABT Player 2 starts on stage 2, field 5
65 BKJA-AABT Player 2 starts on stage 2, field 6
67 BPJA-AABT Player 2 starts on stage 3, field 1
68 BVJA-AABT Player 2 starts on stage 3, field 2
69 BZJA-AABT Player 2 starts on stage 3, field 3
70 B3JA-AABT Player 2 starts on stage 3, field 4
71 B7JA-AABT Player 2 starts on stage 3, field 5
72 CBJA-AABT Player 2 starts on stage 3, field 6
73 CFJA-AABT Player 2 starts on stage 4, field 1
74 CKJA-AABT Player 2 starts on stage 4, field 2
75 CPJA-AABT Player 2 starts on stage 4, field 3
76 CVJA-AABT Player 2 starts on stage 4, field 4
77 CZJA-AABT Player 2 starts on stage 4, field 5
78 C3JA-AABT Player 2 starts on stage 4, field 6
79 C7JA-AABT Player 2 starts on stage 5, field 1
80 DBJA-AABT Player 2 starts on stage 5, field 2
81 DFJA-AABT Player 2 starts on stage 5, field 3
82 DKJA-AABT Player 2 starts on stage 5, field 4
83 DPJA-AABT Player 2 starts on stage 5, field 5
84 DVJA-AABT Player 2 starts on stage 5, field 6
85 DZJA-AABT Player 2 starts on stage 6, field 1
86 D3JA-AABT Player 2 starts on stage 6, field 2
87 D7JA-AABT Player 2 starts on stage 6, field 3
88 EBJA-AABT Player 2 starts on stage 6, field 4
89 EFJA-AABT Player 2 starts on stage 6, field 5
90 EKJA-AABT Player 2 starts on stage 6, field 6

Zombies Ate my Neighbors

1 BF2T-AABJ Start with 10 lives
2 A32T-AABJ Start with 7 lives
3 AB2T-AABJ Start with 1 life
4 A47A-AA6W Infinite lives
5 GK2T-AAB4 Start with 50 shots in starting weapon
6 NV2T-AAB4 Start with 100 shots in starting weapon
7 8V2T-ACB4 Start with 500 shots in starting weapon
8 TV2T-AGB4 Start with 900 shots in starting weapon
9 JK2T-AAB6 Start with soda pop cans instead of squirt guns

FOR CODES 10 THRU 19, HOLD DOWN "A" AND PRESS "B" TO USE NEW WEAPON
10 JB2T-AAB6 Start with bazookas
11 JV2T-AAB6 Start with tomatoes
12 HB2T-AAB6 Start with fire extinguishers
13 J32T-AAB6 Start with ice pops
14 HK2T-AAB6 Start with martian bubble guns
15 HV2T-AAB6 Start with weed-eaters
16 H32T-AAB6 Start with ancient artifacts
17 KK2T-AAB6 Start with plates
18 KV2T-AAB6 Start with silverware
19 K32T-AAB6 Start with footballs
20 AMWA-AA88 Infinite weapons once you have at least 1
21 LK2T-AACJ Start with speed shoes instead of a first aid kit

FOR CODES 22 THRU 27, HOLD DOWN "A" AND PRESS "C" TO USE NEW WEAPON
22 LV2T-AACJ Start with a monster potion
23 L32T-AACJ Start with a ghost potion
24 MB2T-AACJ Start with a random potion
25 NB2T-AACJ Start with a pandora's box
26 NK2T-AACJ Start with a skeleton key
27 NV2T-AACJ Start with a decoy
28 DDXT-AA2G Infinite special items once you have at least 1--EXCEPT KEYS
29 AZ2T-AAA6 Start with 1/2 health
30 A1ET-AAHL Continue with 1/2 health
31 AL8T-AA3G Almost infinite health
32 BF2T-AACG Start with 9 first aid kits instead of 1
33 AMVA-AA4G Infinite keys once you have at least one
34 694T-AGFL Package of squirt guns worth 999
35 NS4T-AAF0 Package of soda pop cans worth 99
36 NS4T-AAFN Fire extinguishers worth 99 on pick up
37 BH5A-AAAR Each key worth 9 on pick up
38 AK0A-AAB2 Start on level 2
39 AP0A-AAB2 Start on level 3
40 AV0A-AAB2 Start on level 4
41 AZ0A-AAB2 Start on level 5
42 A30A-AAB2 Start on level 6
43 A70A-AAB2 Start on level 7
44 BB0A-AAB2 Start on level 8
45 BF0A-AAB2 art on level 9
46 BK0A-AAB2 Start on level 10
47 BP0A-AAB2 Start on level 11
48 BV0A-AAB2 Start on level 12
49 BZ0A-AAB2 Start on level 13
50 B30A-AAB2 Start on level 14
51 B70A-AAB2 Start on Level 15
52 CB0A-AAB2 Start on Level 16
53 CF0A-AAB2 Start on Level 17
54 CK0A-AAB2 Start on Level 18
55 CP0A-AAB2 Start on Level 19
56 CV0A-AAB2 Start on Level 20
57 CZ0A-AAB2 Start on Level 21
58 C30A-AAB2 Start on Level 22
59 C70A-AAB2 Start on Level 23
60 DB0A-AAB2 Start on Level 24
61 DF0A-AAB2 Start on Level 25
62 DK0A-AAB2 Start on Level 26
63 DP0A-AAB2 Start on Level 27
64 DV0A-AAB2 Start on Level 28
65 DZ0A-AAB2 Start on Level 29
66 D30A-AAB2 Start on Level 30
67 D70A-AAB2 Start on Level 31
68 EB0A-AAB2 Start on Level 32
69 EF0A-AAB2 Start on Level 33
70 EK0A-AAB2 Start on Level 34
71 EP0A-AAB2 Start on Level 35
72 EV0A-AAB2 Start on Level 36
73 EZ0A-AAB2 Start on Level 37
74 E30A-AAB2 Start on Level 38
75 E70A-AAB2 Start on Level 39
76 FB0A-AAB2 Start on Level 40
77 FF0A-AAB2 Start on Level 41
78 FK0A-AAB2 Start on Level 42
79 FP0A-AAB2 Start on Level 43
80 FV0A-AAB2 Start on Level 44
81 FZ0A-AAB2 Start on Level 45
82 F30A-AAB2 Start on Level 46
83 F70A-AAB2 Start on Level 47
84 GB0A-AAB2 Start on Level 48
85 GK0A-AAB2 Start on Bonus Level Son of Dr. Tongue
86 GP0A-AAB2 Start on Bonus Level Day of the Tentacle
87 GV0A-AAB2 Start on Bonus Level Someplace Very Warm
88 GZ0A-AAB2 Start on Bonus Level Curse of the Pharaohs
89 G30A-AAB2 Start on Bonus Level Mushroom Men
90 G70A-AAB2 Start on Bonus Level Cheerleaders vs the Monsters
91 GF0A-AAB2 Start on Credit Level Monsters Among Us

Zero Wing

1. ANRA-AAA0 Weapon power-ups level-up your weapon faster
2. ATYA-AA3T Infinite lives
3. ATLT-AA8C Invincibility against enemies, and enemy fire. You can still die from touching obstacles. With this code on, you will not be able to pick-up weapon power-ups. This code makes it very easy to finish the game. Note that you can get power-ups if you use the tracker beam.