Mario Roulette (arcade game, 1991) ROM FOUND!

Here is the download link: mega.nz/#!7ORG2KbY!mIAdLf7BslvfSu2r5LcX8uGg48TZvYcI6FxZ_J8LnPA
Mirror: mega.nz/#!92x1wY7C!PthMeHgWS5YfdPjJniYdhVpRP9U3A_6_-ai0v8nac4Q

Thanks to Cabbusses's Retro Obscurities for lending me the ROM, I asked him for permission to upload this. He has also released a few video clips of the gameplay as well on his YouTube channel.

Note: The emulation in MAME is not entirely accurate yet, there is a few graphical glitches such as the title not appearing, and the palettes are wrong in certain order, but the game is still playable.

I hope you enjoy!