Affiliates:



Double Dragon


WARNING: do not copy these codes to other sites!
1Freeze The Timer CountdownAAUNYLPA
2Start Game With 1 LifeAEUTLZZA
3Start Game With 6 LivesIEUTLZZA
4Start Game With 9 LivesAEUTLZZE
5More Energy For Player 2 Or The CPUXTKNXEZK
6More Energy For Player 1XTKYOEZK
7Timer Will Count Down FastAZUYZLAL
8Timer Will Count Down Super-FastAPUYZLAL
9No EnemiesIII000
10Enemies Will Not Fight Back1IIIEOO
11Slow MotionKOTKOK
12Enemies And Billy Are InvisibleNOTZEY
13Psychedelic Music And Some Sound Is Messed UpANGEIS
14No SoundZOLAZO
15Flying Code2NAYZEY
16Enemies Are Stronger And Fall As If Falling Off A CliffNEYZEY
17Stronger Enemies (They Can Take More Punishment And Give It Back As Well)PEYZEY
18Enemies Slowly Rise To Their DeathIIIZEY
19Only Punching Affects Enemies And BillyGGGZEY
20What Happened To Billy!?SIZZYY
21Billy And Enemies Fall Hard To The Ground When Knocked DownPOTZZY
22Billy Disappears When Hit And Reappears At A Different Location3EEIIOY
23Teleporting Billy!4GIPSSY
24Gliding BillySISSSY
25Switches Places Of Energy, Time, Etc.PIKKYY
26Enemies Are Easier To Kill And So Is BillyUTTXXX
27Enemies Get Sucked Into The Air When Hit (Be Careful This May Happen To Billy As Well)PTTXXX
28Infinite LivesEEUTLZZE
29More Energy For Player 1TKYOEZK
30Mode A Much More PowerNYNLPE
31Gain Hearts Very QuicklyVKKYXLVT
32Don't Gain Any HeartsSXSNKLSA
33Stronger LindasZUPPIL
34Weaker LindasTEPPIL
35Start With 2 Hearts, Start At Level 1 End BossPEXTIZAA
36Start With 3 Hearts, Mid-Level 1ZEXTIZAA
37Start With 4 Hearts, Mid-Level 1LEXTIZAA


Notes
1Note: This code allows you to fight enemies without fear of retaliation. Be careful not to knock enemies outside of the screen as you will not be able to progress if they are still alive. Also, if you turn your back and walk away they sometimes will approach you and you can get them back on the screen that way. I was able to complete this game using this code and was never attacked once. No glitches, hang-ups or problems stopping your progess. A Great Code. Should have been included in the Codebook.
2Enemies fly away when killed. Billy may also fly away which is not good. Some enemies bounce. (Avoid getting enemies stuck in walls)
3Some enemies disappear when killed, dynamite is useless.
4Enemies disappear at times. It is very hard to enter doors!


Credits
Galoob1, 2, 3, 4, 5, 6, 7, 8
Kristian Jarvis9
StillANESFan10
Daniel T11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27
electric_jimi28
Vampire Hunter X29
PhilTheHammerRo30
Tony Hedstrom31, 32
Greg Olafurson33, 34, 35, 36, 37