This is a patch for the T & E Soft/Pony Canyon/FCI game Hydlide for the NES, specifically the US version. It restores the invincibility password 3DGOLFSUPERVER used in the Famicom version but omitted because the password format in the US version was overhauled for some reason. So this is where it gets weird. In order to get the password to work in the Famicom game you have to: 1) Start a new game. 2) Open the game menu and close it (using the "Game" menu option) EXACTLY four times. Then die to get back to the Game Start/Password screen. 3) Watch the entire demo play out EXACTLY two times. 4) Go to the password screen and enter EXACTLY three failed passwords. Then you can enter the password and it works. The mechanics are the same in the US version as well. You might be thinking... screw that. Well I included patches for both the USA and the Famicom version that bypass all that nonsense so you can enter the invincibility password on a new fresh game. THIS IS NOT A GAME ROM. This is a code patch authored by me which must be applied to a file owned by the downloader. You can find this game at many online classic NES game vendors. Enjoy!