that works on a lot of the action games Konami
made for the Nintendo Entertainment System
. It's also the only way some people could beat Contra
. The code goes as follows, and must be entered before at the start screen before the demo begins:
Up, Up, Down, Down, Left, Right, Left, Right, B, A, *Select, Start
*Only hit select if you want a two player game.
This code provides the following benefits (only listed the games I owned):
Contra - 30 Lives
Life Force - 30 Lives
Gradius - Full weapons, shields, and two Options
Castlevania - doesn't work
Jackal - doesn't work
I'm told this works on a whole bunch of GameBoy games, too.
Despite what some people tell you, you DO actually have to hit B and A... otherwise you get nothing.