Hello, all, I know I haven't posted in awhile, but I hope someone can assist me. I'm using NESTopia 1.4.1 on a Macbook Pro with Lion OS 10.7.2. I'm playing the original NES Metroid, and because I'm a total n00b I wanted to use a Game Genie code to give me infinite health, because I don't care about bragging rights, I just want to beat the game and see the ending. I tried inputting the game genie codes into the emulator but for some reason they're not working. The codes I'm trying to use are: SZUIGEVK for infinite energy and/or SXNLOKVK for infinite lives. I'm going into the edit, then game genie menu option and pasting the codes into there. I click OK, but the codes don't work and Samus still gets hurt. I tried resetting the ROM with reloading my save state, and that didn't work. Please help me. Thanks!