Best Answer: First let me say I have never used Extra MAME but it would be like most other GUI's. To help you please answer the following: Are you able to play any games?
What happens if you are to click on any other game listed you don't have the roms for? Are there any messages stating you are missing a file? Where did you download the rom and bios files from. OKAY THAT SAID. Metal Slug requires the NEOGEO bios rom neogeo.zip and the Metal Slug - Super Vehicle-001 rom mslug.zip. The mslug.zip file should be right at 13MB in size and the neogeo.zip at 272KB.
I have found in some cases the emulator has not been set up to look for roms where roms are. This is because of many factors but check your options in Extra Mame and see that it is directed to look for roms in the roms folder on the drive you have them on. I will download this emulator and take a look at it sometime this weekend and get a better feel for it. Respond back with more info and I will try and help out more. Tell us some more.
![Metal Slug 7 Rom Mame Recalbox Image Metal Slug 7 Rom Mame Recalbox Image](http://coolrom.com/screenshots/mame/Metal%20Slug%205.jpg)
![Metal slug 7 rom mame recalbox images Metal slug 7 rom mame recalbox images](https://i.ytimg.com/vi/CD3_9gmKjRk/maxresdefault.jpg)
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Space Invaders Test ROM 2 Ko Space Invaders [Lunar Rescue, Colony 7, Qix, Phoenix] (Radica, Arcade Legends TV Game).
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