Whether the game is supposed to run under 32bit or 64bit MAME is always explicitely stated in the game’s description.
All you have to do is to use the correct version of MAME emulator, both of which are also available on our website. Unlike some other sites that offer you hundreds of games but none of them really work, I can guarantee you that all the games presented here work like a charm. The basic idea behind this project is to provide people both with a working emulator and games they can run on it at the same time. NOTICE!!! I always check the game files myself before I put them on the website, to see whether they work or not.
These are specially modified versions of the program, and more than 90 percent of the games won’t work at all if you use them with the regular MAME versions downloaded from elsewhere! This game is tested and working perfectly with our emulator version MAME64ui, you can download from section emulators. To ensure that all the games you download here work as they are supposed, use them only with the recommended versions of MAME available directly from our website under the 'emulators' tab.